[cu.bit] n [ME, fr. L cubitum elbow, cubit] (14c): any of various ancient units of length based on the length of the forearm from the elbow to the tip of the middle finger and usu. equal to about 18 inches (45.7 centimeters)
CUBIT
Meaning of CUBIT in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012