Moving up and down or back and forth with quick, short, bouncy movements, or causing something to shake slightly in this way.
From 'jiggle,' possibly imitative in origin (imitating the sound of quick movements). First appeared in English in the 1600s as a colloquial term for small shaking motions.
Imitative words like 'jiggle,' 'wiggle,' 'giggle,' and 'jingle' form a whole sound-based vocabulary where the sounds themselves somewhat match the movements they describe—linguists call this 'iconicity,' and it's evidence that language isn't entirely arbitrary.
Complete word intelligence in one call. Free tier — 50 lookups/day.