a projection or ridge that suggests a keel
"The sailboat's hull features a deep keel to keep it stable in rough waters."
the median ridge on the breastbone of birds that fly
"The heron stood perfectly still, its long keeled breastbone supporting the powerful flight muscles needed to soar over the marsh."
one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability
"The old sailing ship groaned as waves battered its keel, keeping it from capsizing in the storm."
A large beam along the underside of a ship’s hull from bow to stern.
"The artist reached for a stick of red keel to add vibrant depth to the landscape sketch."
Red chalk; ruddle.
to collapse, to fall
"The phonetic transcription for the word 'kill' is spelled as /kɛl/, which corresponds to its pronunciation, often noted in dictionaries under the term keel."
To mark with ruddle.
Pronunciation spelling of kill.