- a short metal rod, as a linchpin, driven through holes in adjacent parts, as a hub and an axle, to keep the parts together.
- a short cylindrical rod or tube, as a wrist pin or crankpin, joining two parts so as to permit them to move in one plane relative to each other.
- a short axle, as one on which a pulley rotates in a block.
- an axle for a sheave of a block.
- belaying pin.
verb (used with object), pinned, pin·ning.
- to bookmark (a photo or link) on Pinterest, a website and mobile application: He pinned a jacket from Macy's on his fashion board.
- to fix (a social media post) to the top of a feed: She pinned a tweet about her forthcoming book to the top of her Twitter feed.
verb (used without object), pinned, pin·ning.
- 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.
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Idioms for pin
- (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.
Origin of pin
OTHER WORDS FROM pinre·pin, verb (used with object), re·pinned, re·pin·ning.
Words nearby pin
Definition for pin (2 of 2)
Origin of PIN
Example sentences from the Web for pin
She had low-grade blood poisoning in her ear from the pin she used to pierce it.‘My Crazy Love’ Reveals the Craziest Lies People Tell for Love|Kevin Fallon|November 18, 2014|DAILY BEAST
While that cause may be safely discarded, the correct one is hard to pin down.
And if there was a villain on whom to pin this whole struggle—it would be our inner demons.The Walking Dead’s Luke Skywalker: Rick Grimes Is the Perfect Modern-Day Mythical Hero|Regina Lizik|October 28, 2014|DAILY BEAST
At one point in the Introduction, the coach opines, “history is hard to pin down.”Mike Leach Tackles Geronimo the Motivational Murderer|James A. Warren|August 17, 2014|DAILY BEAST
You wear a pin that adjusts the temperature, lighting, décor, and entertainment to your preference.Up To a Point: Robber Barons Make Way For Robber Nerds|P. J. O’Rourke|August 9, 2014|DAILY BEAST
As soon as Welcome could jerk the pin loose, he whirled and stumped furiously back in the direction of Chub and Penny.Motor Matt's Daring, or, True to His Friends|Stanley R. Matthews
When pulling on the tie pin the arms of the holder tend to draw together and clamp it on the pin.The Boy Mechanic, Book 2|Various
How I rejoiced when I found a great author tripping, and was fairly able to pin him to a corner from which there was no escape!Fragments of science, V. 1-2|John Tyndall
So he put a pin on his sleeve to remind him of it and to-night he brought me a whole lot of it.Village Life in America 1852-1872|Caroline Cowles Richards
An' 'e sez there's a many as 'll do it, an' he tells Twitt—'Twitt,' sez he, 'Pin your faith on brave books!The Treasure of Heaven|Marie Corelli
British Dictionary definitions for pin (1 of 3)
- a short stiff straight piece of wire pointed at one end and either rounded or having a flattened head at the other: used mainly for fastening pieces of cloth, paper, etc, esp temporarily
- (in combination)pinhole
- See belaying pin
- the axle of a sheave
- the sliding closure for a shackle
- the cylindrical part of a key that enters a lock
- the cylindrical part of a lock where this part of the key fits
verb pins, pinning or pinned (tr)
Word Origin for pin
British Dictionary definitions for pin (2 of 3)
British Dictionary definitions for pin (3 of 3)
n acronym for
Medical definitions for pin
Idioms and Phrases with pin
In addition to the idioms beginning with pin
- pin back one's ears
- pin down
- pin money
- pin on
- pin one's heart on
- pin one's hopes on
- pin someone's ears back
- hear a pin drop
- on pins and needles