n. An official written account or entry, usually in a book regularly kept, as of acts, proceedings, or names, for preservation or for reference; a record; a list: a roll; also, the book in which such a record is kept: as, a parish register; a hotel register.n. In com., a document issued by the customs authorities as evidence of a ship's nationality. See registration of British ships, under registration.n. The printed list of signatures at the end of early printed books.n. In music: The compass or range of a voice or an instrument.n. A particular series of tones, within the compass of a voice or of certain instruments, which is produced in the same way and with the same quality: as, the chest-register of the voice, or the chalumeau register of the clarinet.n. In organ-building: Same as stop or stop-knob.n. A perforated frame or board for holding a set of trackers in place.n. A device for registering automatically the number of revolutions made or the amount of work done by machinery, or for recording the pressure of steam, air, or water, or other data, by means of apparatus deriving motion from the object or objects whose force, velocity, etc., it is desired to ascertain.n. A contrivance for regulating the passage of heat or air, as the draft-regulating plate of a furnace, or the damper-plate of a locomotive engine; a perforated plate with valves governing the opening into a duct which admits warm air into a room for heat, or fresh air for ventilation, or which allows foul air to escape.n. In printing, exact adjustment of position in the presswork of books or papers printed on both sides of the leaf.n. The inner part of the mold in which types are cast.n. In bookbinding, a ribbon attached to a full-bound book to serve as a marker of place for the reader.n. Synonyms Catalogue, etc. (see list), chronicle, archives.To enter in a register; indicate by registering; record in any way.To mark or indicate on a register or scale.In rope-making, to twist, as yarns, into a strand.Synonyms See record.To enter one's name, or cause it to bo entered, in a register, as at a hotel, or in the registry of qualified voters.In printing, etc.: To correspond exactly in symmetry, as columns or lines of printed matter on opposite sides of a leaf, so that line shall fall upon line and column upon column.To correspond exactly in position, as in color-printing, so that every different color-impression shall fall exactly in its proper place, forming no double lines, and neither leaving blank spaces nor passing the limits proper to any other color.In organ-playing, same as registrate.n. One who registers: same as registrar.n. Specifically In law: An officer of a United States district court, formerly appointed under the United States bankruptcy act, for the purpose of assisting the judge in the performance of his duties under that act, by attending to matters of detail and routine, or purely administrative in their character.n. In some parts of the United States, an officer who receives and records deeds so as to give public notice thereof.n. A float or buoy attached to a submarine cable while it is being paid out, to diminish the tension on the cable and the liability to injury from that cause.To enter (a letter) at a post-office as a registered letter (which see, under letter).