noun

1. 1. a record or list of names, events, items, etc., often kept by an official appointed to do so
   2. a book in which this is kept
   3. an entry in such a book or record

2. Etymology: prob. altered < ME registrer

   a person who keeps such a record, esp. one legally appointed; registrar
3. registration; registry; enrollment
4. a device, as a meter or counter, for recording fares paid, money deposited, etc. a cash register
5. 1. a device in a stove or furnace for controlling the draft, etc.
   2. ☆ an opening into a room by which the amount of warm or cold air passing, as through a duct leading from a furnace or ventilator, can be controlled
6. Comput. a storage location in the central processing unit
7. Linguis. that aspect of usage having to do with vocabulary, pronunciation, punctuation, level of formality, etc., chosen by a user in a particular social context
8. Music
   1. a division of the compass of the human voice or of an instrument all the tones of which are of similar quality
   2. a set of organ pipes controlled by a given stop or the tone quality produced by such a set
9. Photog. the exact alignment of images, materials, etc., as two negatives
10. Printing
    1. exact matching in position of pages, lines, etc. on opposite sides of a single sheet
    2. exact imposition of successive colors as they are printed over each other

Etymology: ME registre < MFr < ML registrum, altered form of regestum < LL regesta, records, neut. pl. of L regestus, pp. of regerere, to record, lit., to bring back < re-, back + gerere, to bear

transitive verb

1. ☆
   1. to enter in or as in a record or list; enroll or record officially
   2. to transcribe permanently, as if in a register
2. to indicate on or as on a scale a thermometer registers temperature
3. to show, as by facial expression to register surprise
4. to commit (valuable mail) to a special postal service for safeguard by payment of a special fee
5. Printing to cause to be in register

intransitive verb

1. ☆ to enter one's name in a register, as of a hotel
2. to have one's name placed on the list of those eligible to vote in an election, by making application in the prescribed way
3. to enroll in a school, college, etc.
4. to make an impression
5. Music to select and combine organ or harpsichord registers
6. Printing to be in register