the area of interior wall between a window stool and the floor.
17.
Mining. the roof of a stope or drift.
18.
Sports.
a.
a player whose regular position is behind that of players who make initial contact with the opposing team, as behind the forward line in football or nearest the player's own goal in polo.
b.
the position occupied by this player.
–verb (used with object)
19.
to support, as with authority, influence, help, or money (often fol. by up): to back a candidate; to back up a theory with facts.
20.
to bet on: to back a horse in the race.
21.
to cause to move backward (often fol. by up): to back a car.
22.
to furnish with a back: to back a book.
23.
to lie at the back of; form a back or background for: a beach backed by hills.
24.
to provide with an accompaniment: a singer backed by piano and bass.
25.
to get upon the back of; mount.
26.
to write or print on the back of; endorse; countersign.
27.
Carpentry. to attach strips of wood to the upper edge of (a joist or rafter) to bring it to a desired level.
28.
Nautical.
a.
to alter the position of (a sail) so that the wind will strike the forward face.
b.
to brace (yards) in backing a sail.
c.
to reinforce the hold of (an anchor) by means of a smaller one attached to it and dropped farther away.
–verb (used without object)
29.
to go or move backward (often fol. by up).
30.
Nautical. (of wind) to change direction counterclockwise (opposed to veer).
–adjective
31.
situated at or in the rear: at the back door; back fence.
32.
far away or removed from the front or main area, position, or rank; remote: back settlements.
33.
belonging to the past: back files; back issues.
34.
in arrears; overdue: back pay.
35.
coming or going back; moving backward: back current.
Phonetics. (of a speech sound) produced with the tongue articulating in the back part of the mouth, as in either of the sounds of go.
—Verb phrases
38.
back away, to retreat; withdraw: They gradually began to back away from their earlier opinion.
39.
back down, to abandon an argument, opinion, or claim; withdraw; retreat: He backed down as soon as a member of the audience challenged his assertion.
40.
back off,
a.
to back down: Now that the time for action had arrived, it was too late to back off.
b.
Textiles. to reverse (the spindle) in mule spinning prior to winding on the newly spun length of yarn.
41.
back out or out of, to fail to keep an engagement or promise; withdraw from; abandon: Two entrants have backed out of competing in the marathon. You can't back out now.
42.
back up,
a.
to bring (a stream of traffic) to a standstill: A stalled car backed up traffic for miles.
b.
Printing. to print a sheet again on its other side.
c.
Printing. to fill in (the thin copper shell of an electrotype) with metal in order to strengthen it.
d.
to move backward: Back up into the garage.
e.
to reinforce: We backed up the cardboard with slats so it wouldn't fall down.
f.
to support or confirm: He backed up my story and they let us go.
g.
Computers. to duplicate (a file or a program) as a precaution against failure.
43.
back up for, AustralianInformal. to return for more of, as another helping of food.
—Idioms
44.
back and fill,
a.
Nautical. to trim the sails of a boat so that the wind strikes them first on the forward and then on the after side.
b.
to change one's opinion or position; vacillate.
45.
back and forth, South Midland U.S.
a.
to go back and forth, as in running errands or visiting: He spent the day backing and forthing to the post office.
b.
to work in an aimless or ineffective way; expend effort with little result.
46.
back water,
a.
Nautical. to reverse the direction of a vessel.
b.
to retreat from a position; withdraw an opinion: I predict that the council will back water on the tax issue.
47.
be flat on one's back,
a.
to be helpless or beaten: He's flat on his back after a long succession of failures.
b.
to be confined to one's bed because of illness.
48.
behind one's back, in one's absence; without one's knowledge; treacherously; secretly: I'd rather talk to him about it directly than discuss it behind his back.
49.
break someone's back, to cause a person to fail, esp. to cause to become bankrupt: His family's extravagance is breaking his back.
50.
break the back of,
a.
to complete the principal or hardest part of (a project, one's work, etc.): He finally broke the back of the problem.
b.
to overcome; defeat: They broke the back of our union.
51.
get off one's back, Informal. to cease to find fault with or to disturb someone: The fight started when they wouldn't get off my back.
52.
get one's back up, Informal. to become annoyed; take offense: She gets her back up whenever someone mentions her family's influence.
53.
have one's back to the wall, to be in a difficult or hopeless situation.
54.
in back of, behind: He hid in back of the billboard. What could be in back of his strange behavior? Also, back of.
55.
on one's back, Informal. finding fault with or disturbing someone: The boss is always on my back about promptness.
to forsake or neglect: He was unable to turn his back on any suffering creature.
b.
to leave behind, as in anger.
[Origin: bef. 1000; ME bak, OE bæc back of the body; c. OFris bek, OS, ON bak; perh. < IE *bhogo- bending; cf. bacon]
—Related forms
backless, adjective
—Synonyms 19. sustain, abet, favor, assist; countenance, endorse. 29. retire, retreat, withdraw. 31.Back,hind,posterior,rear refer to something situated behind something else. Back means the opposite of front: back window. Hind, and the more formal word posterior, suggest the rearmost of two or more often similar objects: hind legs; posterior lobe. Rear is used of buildings, conveyances, etc., and in military language it is the opposite of fore: rear end of a truck; rear echelon.
—Antonyms 1, 31. front.
—Usage note 51. Although some object to their use, the phrases in back of and the shorter—and much older—back of with the meaning “behind” are fully established as standard in American English: The car was parked (in) back of the house. Both phrases occur in all types of speech and writing.
moving from one place to another and back again; "he traveled back and forth between Los Angeles and New York"; "the treetops whipped to and fro in a frightening manner"; "the old man just sat on the porch and rocked back and forth all day"
first in one direction and then in the other; backwards and forwards Example: We had to go back and forth many times before we moved all our furniture to the new house.
Back\, adv. [Shortened from aback.]1. In, to, or toward, the rear; as, to stand back; to step back. 2. To the place from which one came; to the place or person from which something is taken or derived; as, to go back for something left behind; to go back to one's native place; to put a book back after reading it. 3. To a former state, condition, or station; as, to go back to private life; to go back to barbarism. 4. (Of time) In times past; ago. "Sixty or seventy years back." --Gladstone. 5. Away from contact; by reverse movement. The angel of the Lord . . . came, and rolled back the stone from the door. --Matt. xxvii. 2. 6. In concealment or reserve; in one's own possession; as, to keep back the truth; to keep back part of the money due to another. 7. In a state of restraint or hindrance. The Lord hath kept thee back from honor. --Numb. xxiv. 11. 8. In return, repayment, or requital. What have I to give you back! --Shak. 9. In withdrawal from a statement, promise, or undertaking; as, he took back0 the offensive words. 10. In arrear; as, to be back in one's rent. [Colloq.] Back and forth, backwards and forwards; to and fro. To go back on, to turn back from; to abandon; to betray; as, to go back on a friend; to go back on one's professions. [Colloq.]