While ASL has the verb "finish" (a common concept as found in other languages), it also has other meanings or usages in its own way. This sign with slight inflections can be a verb, a conjunction, or an interjection.
Definition: To bring (something, e.g. activity or task) to an end or to completion; complete.
Meaning: to complete.
Enough!; Stop that!
Expressed when one thinks "Oh no, it's too late!", especially when one is in trouble. Usually used by Deaf native to ASL, not hearing signers.
Expressed when one realizes that one is in trouble! Usually used by Deaf native to ASL, not hearing signers.
First 100 words.
As you feel more comfortable with the first few hundreds of ASL signs, progress further with your vocabulary and learn signing more.