squiggle

noun

1. A short twisting or wiggling line or mark.

   “Even the cold ashes where a gipsy's fire had been sent little squiggles of fear down Laura's spine, for how could she know that they were not still lurking near with designs upon her own person?”

2. (informal)Synonym of tilde.
3. An illegible scrawl.
4. (rare)A burst of laughter.

   “[…] she dodged out again and rejoined the fleeing band which was retiring down the street to a noisy accompaniment of feigned alarm, squiggles of meaningless laughter, […]”

   “[…] squiggles of laughter […]”

verb

1. (ambitransitive)To wriggle or squirm.

   “When I was coming of age in the '60s, I squirmed and squiggled not to be pinned down by that great transfixer "the homosexual" which American psychiatry had made into such a weighty implement.”

2. (ambitransitive)To make a squiggle.
3. (ambitransitive)To write illegibly.