Meaning of KEEL in English

KEEL

n. 25B6; noun the upturned keel of the boat : BASE, bottom (side), underside.

25A0; keel over

the boat keeled over : CAPSIZE, turn turtle, turn upside down, founder; overturn, turn over, tip over.

the slightest activity made him keel over : COLLAPSE, faint, pass out, black out, lose consciousness, swoon.

Concise Oxford thesaurus English vocabulary.      Краткий оксфордский словарь английского языка тезаурус.