WordNet sense 1 (bowed stringed instrument that is the highest member of the violin family; this instrument has four strings and a hollow body and an unfretted fingerboard and is played with a bow):

violin

WordNet sense 2 (avoid (one's assigned duties)):

goldbrick, shirk, shrink from

WordNet sense 3 (manipulate manually or in one's mind or imagination):

diddle, play, toy

WordNet sense 4 (play around with or alter or falsify, usually secretively or dishonestly):

monkey, tamper

WordNet sense 5 (try to fix or mend):

tinker