a small pointed or tapered piece of wood, metal, or plastic used to pin down or fasten things or to fit into or close holes; a pin
a tent peg
Brit = clothes peg
a projecting piece used to hold or support something
any of the pins turned to regulate the pitch of the strings of a musical instrument
a predetermined level at which something, e.g. a price, is fixed
in baseball, a fast throw to a base to get a runner out
informal a person's leg
Brit a drink, esp of spirits
off the peg
chiefly Brit said of clothes: mass-produced; ready-made
square peg in a round hole
see square2
take somebody down a peg or two
to reduce somebody's sense of self-importance
[Middle English pegge, prob from early Dutch]