noun / verb
squiggle
SKWIG-ul/ˈskwɪɡl/
A short, irregularly wavy or looping line.
A short ink squiggle forms uneven waves across the paper.

Etymology
Probably blending “squirm” and “wriggle,” the verb first described eel-like movement. The noun transferred that twisting motion to a curl and then to a wavy line in writing or drawing.
In context
draw a loopy circle. Make a lot of swirls and loops, and try to keep this squiggle connected to one line
More examples
- His signature looks like a squiggle.
- The map uses blue squiggles to mark small streams.
- I squiggle a line beneath my signature.
Forms
squiggle · squiggles · squiggled · squiggling
squiggly adjective — Marked by irregular waves or loops.