What does the slang word beat mean?

This Word depends on context:

to "beat" something can mean to hit or strike something e.g "Gently beat the egg"

the "beat" refers to the rhythm of a piece of music "feel the beat and dance"

to "beat" can also mean to win against someone e.g "Tom beat Greg at football"

to "beat something up" refers to a very one sided fight in which one person clearly lost "Tom beat Greg up"