1. having a keel or ridge-like structure
Usage: nautical; biology

1. past tense of keel: to fall over suddenly
Usage: informal

Examples

• The keeled boat cut smoothly through the water.
• Many birds have keeled breastbones for flight muscle attachment.
• The keeled scales on the snake’s back felt rough to the touch.
• He keeled over from exhaustion after the marathon.
• The old tree keeled over in the storm.
• She nearly keeled over when she heard the shocking news.