stone-face sto·ne·face uncommon noun 1. any plant of the genus Lithops native to Africa having solitary yellow or white flowers and thick leaves that resemble stones Synonymslithopsliving stonestonefacestone plantstone life faceflowering stone Related words Broader terms succulent Parts genus Lithops WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
