Real Dictionary

peg
countable noun: A peg is a small hook or knob that is attached to a wall or door and is used for hanging things on.

peg in American English
a short, usually tapering or pointed piece of wood, metal, etc. used to hold parts together or in place, or to close an opening, as in a barrel
to put a peg or pegs into so as to fasten, secure, mark, etc.
noun: a female given name, form of Peggy
noun: a pin of wood or other material driven or fitted into something, as to fasten parts together, to hang things on, to make fast a rope or string on, to stop a hole, or to mark some point

peg in British English
noun: a small cylindrical pin or dowel, sometimes slightly tapered, used to join two parts together
verb: to knock or insert a peg into or pierce with a peg

peg in Finance 1
verb: If a currency is pegged to another currency, or to gold, its price is fixed in relation to the price of that currency or to gold.

peg in Finance 2
noun: The peg ratio is a ratio that is used to decide the value of a stock, while taking into account earnings growth.