(transitive, slang) 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.)
(cribbage) To move one's pegs to indicate points scored; to score with a peg.
(transitive, slang) To reach or exceed the maximum value on (a scale or gauge).
(slang, transitive, typically in heterosexual contexts) To engage in anal sex by penetrating (one's male partner) with a dildo.