duimen

Etymology 1
From.

Verb

 * 1)  to put one or both thumbs up, notably as a gesture of approval or when hitchhiking to ask for a ride
 * 2)  to twiddle one's thumbs
 * 3)  to keep one's fingers crossed i.e. to show support
 * 4)  to suck one's thumb
 * 1)  to suck one's thumb
 * 1)  to suck one's thumb