fin keel

noun

1

: a plate of metal fixed to the keel of a shallow boat to provide lateral resistance usually supplemented by a cigar-shaped bulb of lead to provide stability

2

: a long narrow and shallow ship (as a yacht) fitted with a fin keel and lead bulb

3

: a yacht with shallow body carried down in an extension of wood or metal which in turn carries a metal keel

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now