Dictionary Game, Round 1

Can you guess the real definitions of the following word? Feel free add your own definition(s).

Salp
a) n., wooden bucket used for collecting sap from the sugar maple, mapulatum cretetum
b) n., small rounded rowboat resembling a coracle, used mainly in Shropshire, England, since the Middle Ages
c) n., any of two varieties of free-swimming tunicates of warm seas, having flattened, keglike bodies
d) v., to skim the surface of casks of fermenting hops; also, to ingest the same with inebriating effect
e) n., military slang for saltpeter, an ingredient in gunpowder
f) n., cloth used to clean a scalpel after surgery