To fasten using a peg.
Let's peg the rug to the floor.
To affix or pin.
I found a tack and pegged your picture to the bulletin board.
To fix a value or price.
China's currency is no longer pegged to the American dollar.
To narrow the cuff openings of a pair of pants so that the legs take on a peg shape.
To throw.
To indicate or ascribe an attribute to. (Assumed to originate from the use of pegs or pins as markers on a bulletin board or a list.)
He's been pegged as a suspect.
To move one's pegs to indicate points scored; to score with a peg.
She pegged twelve points.
To reach or exceed the maximum value on (a scale or gauge).
We pegged the speedometer across the flats.
(typically in heterosexual contexts) To engage in anal sex by penetrating (one's male partner) with a dildo.
To keep working hard at something; to peg away.