Dictionary.net

• [Latin] A falling. L. pilorum, excessive falling out of the hair.

1900 - A dictionary of medicine and the allied sciences
By Alexander Duane

• (pl. -us). Slip (usu. in l. linguae, pr.-gwe, of the tongue, l. calami of the pen). [Latin]

1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry