WATER OAT
Wa"ter oat`.
Defn: Indian rice. See under Rice.
WATER OPOSSUM
Wa"ter o*pos"sum. (Zoöl.)
Defn: See Yapock, and the Note under Opossum.
WATER ORDEAL
Wa"ter or"de*al.
Defn: Same as Ordeal by water. See the Note under Ordeal, n., 1.
WATER OUSEL; WATER OUZEL
Wa"ter ou"sel, Wa"ter ou"zel. (Zoöl.)
Defn: Any one of several species of small insessorial birds of the genus Cinclus (or Hydrobates), especially the European water ousel (C. aquaticus), and the American water ousel (C. Mexicanus). These birds live about the water, and are in the habit of walking on the bottom of streams beneath the water in search of food.
WATER PARSNIP
Wa"ter pars"nip. (Bot.)
Defn: Any plant of the aquatic umbelliferous genus Sium, poisonous herbs with pinnate or dissected leaves and small white flowers.