lever
mechanism:
1. a piece of machinery (see below):
The camera's shutter mechanism is broken.
2. a process, technique, or system for achieving a result:
the mechanisms of peace. —F. D. Roosevelt.
machinery:
1. machines in general or as a functioning unit.
2. the working parts of a machine.
Origin:
1250–1300; Middle English levere, levour for *lever<Anglo-French; Old French levier, equivalent to lev(er) to lift (<Latin levāre to lighten, lift, verbal derivative of levis light) + -ier-ier2. Dictionary 2: C13: from Old French leveour, from lever to raise, from Latin levāre, from levis light. —Dictionary.com. //
First Known Use of lever: Noun: 14th century. Verb: 1876. History and Etymology for lever: Noun and Verb: Middle English, from Anglo-French levier, lever, from lever to raise, from Latin levare, from levis light in weight — more at light. —Merriam-Webster.
See illustration at Merriam-Webster *
Sources: 1, 2.
1. a piece of machinery (see below):
The camera's shutter mechanism is broken.
2. a process, technique, or system for achieving a result:
the mechanisms of peace. —F. D. Roosevelt.
machinery:
1. machines in general or as a functioning unit.
2. the working parts of a machine.
Origin:
1250–1300; Middle English levere, levour for *lever<Anglo-French; Old French levier, equivalent to lev(er) to lift (<Latin levāre to lighten, lift, verbal derivative of levis light) + -ier-ier2. Dictionary 2: C13: from Old French leveour, from lever to raise, from Latin levāre, from levis light. —Dictionary.com. //
First Known Use of lever: Noun: 14th century. Verb: 1876. History and Etymology for lever: Noun and Verb: Middle English, from Anglo-French levier, lever, from lever to raise, from Latin levare, from levis light in weight — more at light. —Merriam-Webster.
See illustration at Merriam-Webster *
Sources: 1, 2.