Meaning of KEEL in English

KEEL

I. keel 1 /kiːl/ BrE AmE noun

[ Date: 1300-1400 ; Language: Old Norse ; Origin: kjölr ]

1 . on an even keel steady, without any sudden changes

keep something/get something back on an even keel

Now that the crisis is over, we must try to get things back on an even keel.

2 . [countable] a bar along the bottom of a boat that keeps it steady in the water

II. keel 2 BrE AmE verb

keel over phrasal verb

to fall over sideways:

Several soldiers keeled over in the hot sun.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.