leg

+ [exclamation] shake a leg! - afanya't!
(synonym - get a move on! / get a wriggle on!)

com es diu 'wriggle' en català?

OALD:
1. ~ (about / around) to twist and turn your body or part of it with quick short movements The baby was wriggling around on my lap. [vn] She wriggled her toes.
2. [usually +adv. / prep.] to move somewhere by twisting and turning your body or part of it syn squirm: [v] The fish wriggled out of my fingers. * [v-adj] She managed to wriggle free. * [vn] They wriggled their way through the tunnel. * He wriggled himself into a comfortable position.