the principal in a mechanism, as in a watch.
the chief motive power; the impelling cause.
the principal power spring of a mechanism, esp in a watch or clock
the chief cause or motive of something
1590s, of watches, clocks, etc., from main (adj.) + spring (n.3). Figurative use from 1690s.
- Main squeeze
noun phrase 1. One’s boss, the highest authority, an important person. For example, Who’s the main squeeze in this company? This slangy term was first recorded in 1896, and the precise allusion is unclear. 2. One’s sweetheart, as in Nancy is his main squeeze. This slangy usage, first recorded in 1970, alludes to the “squeeze” […]
[meyn-stey] /ˈmeɪnˌsteɪ/ noun 1. Nautical. the that secures the mainmast forward. 2. a person or thing that acts as a chief support or part: Coffee is the mainstay of the country’s economy. /ˈmeɪnˌsteɪ/ noun 1. (nautical) the forestay that braces the mainmast 2. a chief support n. “chief support,” 1787, figurative use of a nautical […]
- Main store
noun 1. (computing) another name for memory (sense 7) main memory
[meyn-streem] /ˈmeɪnˌstrim/ noun 1. the principal or dominant course, tendency, or trend: the mainstream of American culture. 2. a river having tributaries. 3. regular school classes or regular schools: keeping autistic students in the mainstream. adjective 4. belonging to or characteristic of a principal, dominant, or widely accepted group, movement, style, etc.: mainstream Republicans; a […]