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ogee an elongated S-shaped curve, or a molding in such a curve.
ogive the diagonal rib of a Gothic vault. [3 definitions]
Oglala the Teton tribe of Dakota Indians living in South Dakota, west of the Missouri River. [2 definitions]
ogle to look or stare at (someone) in a lustful or flirtatious manner. [2 definitions]
ogre an ugly giant or monstrous person that eats people, esp. one in folk tales and children's stories. [2 definitions]
OH abbreviation of "Ohio," a Midwestern U.S. state between Pennsylvania and Indiana.
oh used to express surprise, pain, disbelief, or the like. [2 definitions]
Ohio a Midwestern U.S. state between Pennsylvania and Indiana. (abbr.: OH) [2 definitions]
ohm a unit of electrical resistance equal to the resistance of a circuit in which an electromotive force of one volt produces a current of one ampere.
ohmmeter an instrument that measures electrical resistance directly in ohms.
-oid resembling (whatever is specified); having the characteristics of. [2 definitions]
oil any of numerous mineral, animal, plant, or synthetic substances that are viscous, usu. liquid, and greasy, and that are soluble in ether or alcohol but not in water. [7 definitions]
oil cake a compressed cake of ground linseed, cottonseed, soybean, or the like, from which the oil has been extracted, used as feed or fertilizer.
oilcloth a heavy smooth cloth that has been treated with oil and other materials to make it waterproof, and that is often used to line cupboards or as a tablecloth.
oil color a paint made of pigment ground in oil, usu. linseed; oil paint.
oil field an area having large deposits of oil, esp. one with many wells.
oil of vitriol see sulfuric acid.
oil painting a painting executed in oil colors. [2 definitions]
oilpaper paper made transparent and water-resistant by soaking in oil.
oil shale shale containing hydrocarbons that yield petroleum.
oilskin a cloth treated with oil to make it waterproof. [2 definitions]