The Collaborative International Dictionary of English v.0.48:
Wriggler \Wrig"gler\, n. One who, or that which, wriggles. --Cowper. [1913 Webster]WordNet (r) 3.0 (2006):
wriggler n 1: one who can't stay still (especially a child); "the toddler was a real wiggler on plane trips" [syn: wiggler, wriggler, squirmer] 2: larva of a mosquito [syn: wiggler, wriggler]