act >> /ækt/
Definition: [intransitive verb] Take action; do something.
Example: they urged Washington to act
Definition: [intransitive verb] Behave in the way specified.
Example: they followed the man who was seen acting suspiciously
Definition: [intransitive verb] Take effect; have a particular effect.
Example: blood samples are analyzed to find out how the drug acts in the body
Definition: [intransitive verb] Perform a fictional role in a play, movie, or television production.
Example: she acted in her first professional role at the age of six
Definition: [noun] A thing done; a deed.
Example: a criminal act
Definition: [noun] A pretense.
Example: she was putting on an act and laughing a lot
Definition: [noun] A written ordinance of Congress, or another legislative body; a statute.
Example: the act to abolish slavery
Definition: [noun] A main division of a play, ballet, or opera.
Example: the first act