sloop
Concise Oxford English Dictionary © 2008 Oxford University Press:
sloop/sluːp/
▶noun
- 1 a one-masted sailing boat with a mainsail and jib rigged fore and aft.
- 2 (also sloop of war) historical a small square-rigged sailing warship with two or three masts.
- 3 a small anti-submarine warship used for convoy escort in the Second World War.
– origin C17: from Du. sloep(e), of unknown origin.
'sloop' also found in these Oxford entries:

