from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mechanical or electromechanical calculator; an adding machine without a crank, driven instead by keypress.
from the GNU version of the Collaborative International Dictionary of English
- n. A calculating machine; an arithmometer.
from The Century Dictionary and Cyclopedia
- n. A key-actuated machine for performing addition, subtraction, multiplication, and division. It has nine keys and one lever for each column of figures; the keys actuate the levers, and the level's figure-wheels which indicate results.
Trade name of Felt and Tarrant Manufacturing Company, apparently a blend of compute and meter, meaning "measure". (Wiktionary)