To emit by, or as by, flood gates.
To wet copiously, as by opening a sluice
to sluice meadows
To wash with, or in, a stream of water running through a sluice.
(more generally) To wash (down or out).
To flow, pour.
To elide the C` in a coordinated wh-question. See sluicing.
The act by which something is sluiced; a copious wetting; a drenching.
A kind of ellipsis, introduced by an interrogative, where (usually) everything except the interrogative is elided from the clause, as in "I like him, but I don't know why".