tinker

Entry Definition
s/he keeps handling it, fiddles with it; (mechanic, etc.) s/he keeps working at it
s/he keeps handling it, fiddles with it; (mechanic, etc.) s/he keeps working at it
s/he fouls it up by tinkering with it
s/he fouls up something belonging to h/ by tinkering with it
s/he shakes it, s/he shakes it thus; s/he fiddles or tinkers with it