Wordnet 3.0
NOUN (1)
1.
a pike fitted with an ax head;
The Collaborative International Dictionary of English v.0.48:
Halberd \Hal"berd\ (h[o^]l"b[~e]rd; 277), n. [F. hallebarde; of
German origin; cf. MHG. helmbarte, G. hellebarte; prob.
orig., an ax to split a helmet, fr. G. barte a broad ax
(orig. from the same source as E. beard; cf. Icel. bar[eth]a,
a kind of ax, skegg beard, skeggja a kind of halberd) + helm
helmet; but cf. also MHG. helm, halm, handle, and E. helve.
See Beard, Helmet.] (Mil.)
An ancient long-handled weapon, of which the head had a point
and several long, sharp edges, curved or straight, and
sometimes additional points. The heads were sometimes of very
elaborate form. [Written also halbert.]
[1913 Webster]
WordNet (r) 3.0 (2006):
halberd
n 1: a pike fitted with an ax head