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oldsquaw a black marine duck with a white breast.
oldster (informal) someone who is old.
old style a style of print type originating in the eighteenth century, in which the letters had a fairly uniform narrowness and slanting serifs. [2 definitions]
Old Testament the Christian name for the Hebrew Scriptures that make up the first of two main divisions of the Christian Bible but the whole of the Jewish Bible. (Cf. New Testament.) [2 definitions]
old-time of, concerning, or typical of long-past times. [2 definitions]
old-timer someone or something that is old. [2 definitions]
old wives' tale a superstition, usu. embodied as a folk tale or bit of folk wisdom.
Old World the Eastern Hemisphere, esp. Europe or European culture.
old-world of, concerning, or reminiscent of Europe or Europeans. [2 definitions]
-ole any of certain chemical compounds containing a five-member, usu. heterocyclic ring. [2 definitions]
olé used to express approval or excitement, usu. heard in Hispanic countries.
oleaginous of, concerning, or like oil; oily. [3 definitions]
oleander any of several poisonous evergreen shrubs of the dogbane family that bear white, pink, or red blossoms.
oleate an ester or salt of oleic acid.
oleic of, pertaining to, or derived from oil or oleic acid.
oleic acid an oily acid, not soluble in water, that occurs in most animal and vegetable fats and oils, and is used in soap, ointments, and cosmetics.
olein the liquid triglyceride of oleic acid, occurring in most fats and oils and as the major component of olive oil. [2 definitions]
oleo an imitation butter made chiefly from vegetable oil; margarine; oleomargarine.
oleo- oil.
oleomargarine an imitation butter made chiefly from vegetable oil; margarine; oleo.
oleoresin a naturally occurring mixture of resin and an essential oil such as turpentine.