1 fragment, piece, shard or sherd, splinter, flake, sliver, scrap, morsel, bit:
A chip of slate rattled down off the roof.
2 counter, marker, token; plaque, US check:
He put his chip on number 14.
3 chisel, whittle, hew:
He chipped away at the stone till it fitted perfectly into the hole.
4 chip in.
(a) contribute; participate:
All the neighbours chipped in to pay for the street decorations.
(b) interrupt, break in, intrude, interfere, intercede, interpose, Colloq chime in:
Clive chipped in with his usual silly comment.