What does pin mean?
A pin is a small, pointed object used to fasten materials, mark a position, or identify a location, while as a verb it means to hold something securely, mark it precisely, or establish an exact attribution. In everyday use, the word often refers to a small metal fastener, as in a safety pin or a straight pin, but it can also describe a bowling pin, a decorative badge, or a marker on a map. Verb uses extend naturally into figurative language: to pin down a fact is to determine it accurately, and to pin something on a person or event is to assign responsibility or significance to it. The word’s central idea is that of fixing something in a definite position. This makes “pin” useful whenever a person wants to describe securing a material object, identifying a precise point, or firmly establishing what caused or characterizes something.
A small, slender fastener or pointed object used to hold materials together, mark a position, or serve as a marker.
"He put a pin through the papers to keep them in order."
The noun has several established specialized meanings, including a bowling pin, a map marker, and a decorative badge.
To fasten, hold, or mark something with a pin, or to identify or establish something precisely.
"The researchers were able to pin down the exact time of the event."
Figurative uses are common and often imply precision, firmness, or attribution.
The standard plural is “pins.”
"The map was covered with colored pins marking the locations."
From securing cloth with a pin to identifying the exact location of an event, this tiny word carries the idea of making something fixed, precise, and impossible to overlook.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pin come from?
The English word comes ultimately from Latin pinna, meaning “feather” or “wing,” and originally referred to a projecting point or fastening that could be fixed into place. The Old English form pinna developed into Middle English pin, while the modern spelling became established. The same Latin root also lies behind words such as pinnacle, pinnace, and pinnate, through the idea of a projecting point or feather-like form.
Related word forms
How pin is actually used
The noun is common in both British and American English. In figurative uses, especially with “pin down,” “pinpoint,” and “pin on,” it suggests precision, firm evidence, or a definite attribution.
Easily confused with pin
A pin is a small fastener or pointed object, whereas a pen is an instrument used for writing or drawing with ink.
A pin is generally a manufactured fastener or marker, while a fin is a projecting part of an animal such as a fish, shark, or whale.