Answer:

register

Answer	Crossword Clue
REGISTER	Log
REGISTER	Sign up
REGISTER	Cash follower

REGISTER	Hotel book
REGISTER	Roll
REGISTER	Record
REGISTER	Sink in
REGISTER	Enroll.
REGISTER	Record.
REGISTER	Sign.
REGISTER	Singer's range.

REGISTER	Compass of a voice.
REGISTER	Do this to vote.
REGISTER	Cash ....
REGISTER	Verb for voters.
REGISTER	Singer's voice range
REGISTER	Cashbox
REGISTER	Social or cash follower
REGISTER	Make an impression

REGISTER	Sign on
REGISTER	Initially, Rod Steiger busted cashbox (8)
REGISTER	Till holder
REGISTER	Need for checking people out
REGISTER	Checkout sight
REGISTER	Word with "social" or "cash"
REGISTER	Word with cash or social