register

noun

1
a cashbox with an adding machine to register transactions; used in shops to add up the bill
2
a regulator (as a sliding plate) for regulating the flow of air into a furnace or other heating device
3
an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room
4
(computer science) memory device that is the part of computer memory that has a specific address and that is used to hold information of a specific kind
5
(music) the timbre that is characteristic of a certain range and manner of production of the human voice or of different pipe organ stops or of different musical instruments
6
an official written record of names or events or transactions
7
a book in which names and transactions are listed

1
enter into someone's consciousness
Did this event register in your parents' minds?
2
indicate a certain reading; of gauges and instruments
The thermometer showed thirteen degrees below zero
The gauge read `empty'
3
record in a public office or in a court of law
file for divorce
file a complaint
4
send by registered mail
I'd like to register this letter
5
manipulate the registers of an organ

Also useful for “register”:Unscrambler— Rearrange the letters in “register”