[bach-uh-ler, bach-ler]
an unmarried man.
a person who has been awarded a bachelor's degree.
a fur seal, especially a young male, kept from the breeding grounds by the older males.
Also called bachelor-at-arms. a young knight who followed the banner of another.
Also called household knight. a landless knight.

1250–1300; Middle English bacheler < Old French < Vulgar Latin *baccalār(is) farm hand; akin to Late Latin baccalāria piece of land, orig. plural of *baccalārium dairy farm, equivalent to *baccālis of cows (bacca, variant of Latin vacca cow + -ālis -al1) + -ārium place

bachelorlike, adjective
bachelorly, adjective
nonbachelor, noun
prebachelor, adjective, noun Unabridged


[bach-uh-lerz, bach-lerz]
noun Informal. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
bachelor (ˈbætʃələ, ˈbætʃlə)
1.  a.  an unmarried man
 b.  (as modifier): a bachelor flat
2.  a.  a person who holds the degree of Bachelor of Arts, Bachelor of Education, Bachelor of Science, etc
 b.  the degree itself
3.  Also called: bachelor-at-arms (in the Middle Ages) a young knight serving a great noble
4.  bachelor seal a young male seal, esp a fur seal, that has not yet mated
[C13: from Old French bacheler youth, squire, from Vulgar Latin baccalāris (unattested) farm worker, of Celtic origin; compare Irish Gaelic bachlach peasant]
usage  Gender-neutral form: single person

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1300, "youthful knight, novice in arms," from O.Fr. bacheler (11c.) "knight bachelor," a young squire in training for knighthood, probably from M.L. baccalarius "vassal farmer," one who helps or tends a baccalaria "section of land." Or from L. baculum "a stick," since the squire would practice with
a staff, not a sword. Meaning evolved 14c. from "knight in training" to "junior member of a guild or university" to "unmarried man" (late 14c.), an evolution that paralleled the word's development in French. Bachelor party is first recorded 1922.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Bighorn sheep live in divided herds: ewes and lambs together in larger groups, rams in smaller bachelor herds.
He says an old bachelor lived there, and then one day his home burned, and he rebuilt with concrete so it would be fireproof.
Brough, for instance, is enrolled in a bachelor of science program and hopes to complete a doctor of medicine program.
University quality especially at the bachelor level is often a chimera.
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