Merriam-Webster Collegiate Dictionary - caviar

 also ~e  noun  Etymology: earlier cavery, ~ie, from obsolete Italian ~i, plural of ~o, from Turkish havyar  Date: circa 1560  1. processed salted roe of large fish (as sturgeon)  2. something considered too delicate or lofty for mass appreciation — usually used in the phrase ~ to the general  3. something considered the best of its kind the ~ of porcelain