v. & n.
v. (tipped, tipping) 1 a intr. lean or slant. b tr. cause to do this. 2 tr. (foll. by into etc.) a overturn or cause to overbalance (was tipped into the pond). b discharge the contents of (a container etc.) in this way.
n. 1 a a slight push or tilt. b a light stroke, esp. in baseball. 2 Brit. a place where material (esp. refuse) is tipped. tip the balance make the critical difference. tip the scales see SCALE(2). tip-up able to be tipped, e.g. of a seat in a theatre to allow passage past.
[ 17th c.: orig. uncert. ]