To arrange to employ or use (a worker, a space, etc.).
To enter into conflict with (an enemy).
To come into gear with.
To enter into (an activity), to participate (construed with in).
To draw into conversation.
To mesh or interlock (of machinery, especially a clutch).
To attract, to please; (archaic) to fascinate or win over (someone).
To guarantee or promise (to do something).
To engross or hold the attention of; to keep busy or occupied.
To bind through legal or moral obligation (to do something, especially to marry) (usually in passive).
To enter into battle.
To make firm or immovable.
To command the attention of.
To attach or fasten parts by using rivets.
To install rivets.
Any fixed point or certain basis.
A cylindrical mechanical fastener that attaches multiple parts together by fitting through a hole and deforming the head(s) at either end.