(followed by "with") To accompany.
I'd like you to come along with me to the opera.
To progress; to make progress.
The renovation is coming along nicely, and should be ready within a month.
Expression of encouragement or mild reproach.
Come along, Jane. Please finish your homework.
A type of hand-operated winch used, for example, to tighten straps, chains, or ropes.
The kayak was tied to the roof of her car with two come alongs.
A type of hold used to restrain an opponent.