Clencher

Part of speech: noun

Definitions

1. A device or tool used to fasten or grip objects securely; a person who firmly secures something by tight grasp or pressure; an action or element that decisively settles a matter or event
2. An instrument designed to hold items tightly; an individual who firmly grasps or secures something; a key factor or moment that conclusively determines an outcome
3. A mechanism or implement for gripping or securing; someone who holds something with firm closure; a crucial point or component that finalizes or wins a situation

Etymology: Clench is an older English verb meaning to grip tightly or close the hand firmly, and the "-er" ending turns it into a noun for the thing or person doing that gripping. The pattern is ordinary English word-building: a verb plus "-er" produces a name for an agent or instrument, as with "driver" or "opener." The word therefore has no separate ancestry beyond that verb and suffix. Its modern senses follow the same logic. A literal clencher is a device that grips or fastens, while the figurative sense, the decisive point that settles a matter, extends the image of a firm grip to a firm conclusion. The final move that closes an argument or a contest is the part that "takes hold" of the outcome.

Synonyms: gripper, holder, fastener, clamp, clasper