Definition of act
(adv)
used in
polite request; "please pay attention"
(verb)
play a
role or part; "Gielgud
played Hamlet"; "She wants to act Lady Macbeth, but she is too
young for the role"; "She
played the
servant to her husband's master"
perform on a
stage or theater; "She
acts in this play"; "He acted in `Julius Caesar'"; "I
played in `A Christmas Carol'"