Meretrix

"Nomus Marcellus has pointed out the difference between this class of prostitutes and the prostibula. "This is the difference between a meretrix (harlot) and a prostibula (common strumpet): a meretrix is of a more honorable station and calling; for meretrices are so named a merendo (from earning wages) because they plied their calling only by night; prostibulu because they stand before the stabulum (stall) for gain both by day and night.""