n. (Zool.) See Birt. [ Prov. Eng. ] [ 1913 Webster ]
n. & v. t. See Burden. [ Archaic ] [ 1913 Webster ]
n. [ Cf. OE. & Prov. E. bort to press or indent anything. ] (Naut.) A peculiar tackle, formed of two or more blocks, or pulleys, the weight being suspended to a hook block in the bight of the running part. [ 1913 Webster ]
v. t.
v. t. [ 1st pref. un- + burthen. ] To unburden; to unload. [ 1913 Webster ]