Chess. the immobilization of an enemy piece by attacking with one's queen, rook, or bishop.
Electronics. a pin-shaped connection, as the terminals on the base of an electron tube or the connections on an integrated circuit.
verb (used with object), pinned, pinning.
to fasten or attach with or as with a pin or pins:
to pin two pieces of cloth together.
to hold fast in a spot or position (sometimes followed by down):
The debris pinned him down.
to transfix or mount with a pin or the like:
to pin a flower as a botanical specimen.
Chess. to immobilize (an enemy piece) by placing one's queen, rook, or bishop in a position to check the exposed king or capture a valuable piece if the pinned piece were moved.
Wrestling. to secure a fall over one's opponent.
to bind or hold to a course of action, a promise, etc.
to force (someone) to deal with a situation or to come to a decision:
We tried to pin him down for a definite answer, but he was too evasive for us.
pin in, to fill (gaps in a rubble wall, etc.) with spalls.
pin up, to make (a piece of masonry) level or plumb with wedges.
(of a young woman) to receive a male student's fraternity pin as a symbol of his affection and fidelity, usually symbolizing that the couple is going steady or plans to become engaged.
(of a young couple) to become formally pledged to one another, though not yet engaged, by the bestowing of such a pin or the exchange of pins.
pin something on someone, Informal. to ascribe the blame or guilt for something to a person; show someone to be culpable:
They pinned the crime on him.
pull the pin, Informal. to end a relationship, project, program, or the like, because of lack of continuing interest, success, funds, etc.
before 1100; (noun) Middle Englishpinne,Old Englishpinn peg; cognate with Dutchpin,GermanPinne,Old Norsepinni; perhaps < Latinpinna feather, quill (see pinna); (v.) Middle Englishpinnen, derivative of the noun
repin, verb (used with object), repinned, repinning.
1. bolt, peg. 3. brooch.
a number assigned to an individual, used to establish identity in order to gain access to a computer system via an automatic teller machine, a point-of-sale terminal, or other device.
late O.E. pinn "peg, bolt," from P.Gmc. *penn- "jutting point or peak" (cf. O.N. pinni "peg, tack," M.Du. pin "pin, peg," O.H.G. pfinn, Ger. Pinne "pin, tack") which may be via L. pinna "wing, feather," also used for "pointed peak," from PIE *bend- "something protruding." The modern slender wire pin is first attested by this name c.1380. Transferred sense of "leg" is recorded from 1530. The verb is recorded from c.1300; sense of "to hold someone or something down so he or it cannot escape" is attested from 1740. Pin-up (adj.) is from 1941 (first in ref. to Dorothy Lamour); the noun is recorded from 1943. Pinwheel is from 1696, "a wheel in the striking train of a clock in which pins are fixed to lift the hammer;" fireworks sense is from 1869. Pinhead "person of small intelligence" is first attested 1896. Pin-stripe is attested from 1896. Pin-money "annual sum allotted to a woman for personal expenses on dress, etc." is attested from 1621.
acronym for personal identification number, 1981, from the first ref. used with redundant number.