noun

• (music) A pulse on the beat level, the metric level at which pulses are heard as the basic unit. Thus a beat is the basic time unit of a piece.
• A rhythm.
• (authorship) A short pause in a play, screenplay, or teleplay, for dramatic or comedic effect.
• (by extension) An area of a person's responsibility, especially
  "to walk the beat"

verb

• (transitive) To hit; to strike.
  "As soon as she heard that her father had died, she went into a rage and beat the wall with her fists until her knuckles bled."
• (transitive) To strike or pound repeatedly, usually in some sort of rhythm.
  "He danced hypnotically while she beat the atabaque."
• (intransitive) To strike repeatedly; to inflict repeated blows; to knock vigorously or loudly.
  "[…] the men of the city, certain sons of Belial, beset the house round about, and beat at the door […]"
• (intransitive) To move with pulsation or throbbing.
  "A thousand hearts beat happily."

verb

• (especially colloquial) past participle of beat

adj

• (US slang) Exhausted.
  "After the long day, she was feeling completely beat."
• (slang) Dilapidated, beat up.
  "Dude, you drive a beat car like that and you ain’t gonna get no honeys."
• (African-American Vernacular and gay slang) Having impressively attractive makeup.
  "Her face was beat for the gods!"
• (slang) Boring.