The Collaborative International Dictionary
Ward-corn
Ward-corn \Ward"-corn`\, n. [Ward + F. corne horn, L. cornu.]
(O. Eng. Law)
The duty of keeping watch and ward (see the Note under
Watch, n., 1) with a horn to be blown upon any occasion of
surprise.
--Burrill.
Wiktionary
ward-corn
n. (context UK legal obsolete English) The duty of keeping watch and ward, with a horn to be blown upon any occasion of surprise.