Definition of dike

• n. - A ditch; a channel for water made by digging.
• n. - An embankment to prevent inundations; a levee.
• n. - A wall of turf or stone.
• n. - A wall-like mass of mineral matter, usually an intrusion of igneous rocks, filling up rents or fissures in the original strata.
• v. t. - To surround or protect with a dike or dry bank; to secure with a bank.
• v. t. - To drain by a dike or ditch.
• v. i. - To work as a ditcher; to dig.