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Pin definition: a small, slender, often pointed piece of wood, metal, etc., used to fasten, support, or attach things.. See examples of PIN used in a sentence.

noun [ C ] uk / pɪn / us (also PIN number, uk us ) abbreviation for Personal Identification Number: the secret number that allows you to use a bank card in a machine

A little piece of stiff wire with a pointed end and a flattened or rounded head, used for fastening things together or holding them in place; straight pin.

Definition of pin noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Sep 19, 2025 · A personal identification number (PIN) is a numerical code used to authenticate a user's identity during electronic financial transactions, primarily associated with payment cards.

PINs are generally only decimal digits. A memorized secret typically consisting of only decimal digits. A secret number that a cardholder memorizes and uses to authenticate his or her …

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Click Home to view Pins that have been picked for you based on the boards you create, Pins you engage with, and things you search for on Pinterest. Click Today to view a curated collection …

Pins are visual bookmarks that people use to save content they love on Pinterest. People can search for Pins, save the ones they like and click on a Pin to learn more. You can create your …