noun.roe of the sturgeon or other large fish, considered a delicacy
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
salted roe of sturgeon or other large fish; usually served as an hors d'oeuvre
Word Usage
"Though the term caviar is now widely used to describe any sort of lightly salted loose fish eggs, for many centuries it referred only to loose sturgeon eggs."