an embankment for controlling or holding back the waters of the sea or a river

They built a temporary dike of sandbags to keep the river from flooding the town.

a ditch.

a bank of earth formed of material being excavated.

a causeway.

British Dialect . a low wall or fence, esp. of earth or stone, for dividing or enclosing land.

an obstacle; barrier.

Geology .

a long, narrow, cross-cutting mass of igneous rock intruded into a fissure in older rock.

a similar mass of rock composed of other kinds of material, as sandstone.

Chiefly Australian Slang . a urinal.

to furnish or drain with a dike.

to enclose, restrain, or protect by a dike

to dike a tract of land.

noun

bank , barrier , causeway , channel , ditch , dyke , embankment , levee , watercourse