in the mensuration of the ancients, a long measure, equal to the length of a man's arm, from the elbow to the tip of the fingers.

Dr Arbuthnot makes the English cubit equal to 18 inches; the Roman cubit equal to 1 foot 5.406 inches; and the cubit of the scripture equal to 1 foot 9.888 inches.

CUBITÆUS muscles, the name of two muscles of the hand. See Anatomy, Table of the Muscles.