n.
Function: transitive verb
Date: 1851
1 a : to provide (as machinery) with gearing b : to connect by gearing
2 a : to make ready for effective operation b : to adjust so as to match, blend with, or satisfy something < gear ing wages to productivity>
intransitive verb
1 a British of machinery : to be in gear : MESH b : SHIFT 1C < gear down>
2 : to become adjusted so as to match, blend, or harmonize