Source : Webster's Revised Unabridged Dictionary (1913)

Oolite \O"["o]*lite\, n. [Gr. w,'o`n an egg + -lite: cf.F.
   o["o]lithe. So named from its resemblance to the roe of
   fish.] (Geol.)
   A variety of limestone, consisting of small round grains,
   resembling the roe of a fish. It sometimes constitutes
   extensive beds, as in the European Jurassic. See the Chart of
   {Geology}.