- A channel or trough.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for alveus
The calidarium had the labrum at one end, and the alveus was in one side of the room.
At the other end stood the large hot water tank (alveus), in which the bath was taken by a number of persons at a time.The Private Life of the Romans
Harold Whetstone Johnston
At one end of the caldarium we find the bath basin, alveus; at the other is the support of the labrum, which has disappeared.
This alveus would accommodate eight bathers, that in the men's caldarium perhaps ten.
The square basin (alveus or baptisterium) which served for the warm baths was of marble.The Wonders of Pompeii