3. A channel for taking away air or water; also, the point of beginning of such a channel; a take-off.
Ohm"me`ter (?), n. [Ohm + meter.] (Elec.) An instrument for indicating directly resistance in ohms.
O*ka"pi (?), n. [Native name on the borders of Belgian Kongo, possibly the same word as Mpongwe okapo lean.] A peculiar mammal (Okapia johnostoni) closely related to the giraffe, discovered in the deep forests of Belgian Kongo in 1900. It is smaller than an ox, and somewhat like a giraffe, except that the neck is much shorter. Like the giraffe, it has no dewclaws. There is a small prominence on each frontal bone of the male. The color of the body is chiefly reddish chestnut, the cheeks are yellowish white, and the fore and hind legs above the knees and the haunches are striped with purplish black and cream color.
O"kra (?), n. The pods of the plant okra, used as a vegetable; also, a dish prepared with them; gumbo.
Old Dominion. Virginia; -- a name of uncertain origin, perh. from the old designation of the colony as "the Colony and Dominion of Virginia."
Old Line State. Maryland; a nickname, alluding to the fact that its northern boundary in Mason and Dixon's line.
O`le*og"ra*phy (?), n. 1. Art or process of producing the pictures known as oleographs.