Defn: Embattled. [Obs.] Chaucer.

BATARDEAU
Ba`tar*deau", n. Etym: [F.]

1. A cofferdam. Brande & C.

2. (Mil.)

Defn: A wall built across the ditch of a fortification, with a sluice gate to regulate the height of water in the ditch on both sides of the wall.

BATATAS; BATATA
Ba*ta"tas, Ba*ta"ta, n.

Defn: An aboriginal American name for the sweet potato (Ipomæa batatas).

BATAVIAN
Ba*ta"vi*an, a.

Defn: Of or pertaining to (a) the Batavi, an ancient Germanic tribe; or to (b) as, a Batavian legion. Batavian Republic, the name given to Holland by the French after its conquest in 1795.

BATAVIAN
Ba*ta"vi*an, n.