SE'A-HORSE, noun [sea and horse.] 1. In ichthyoilogy, the morse, a species of Trichechus or walrus. 2. The hippopotamus, or river horse. 3. A fish of the needle-fish kind, four or five inches in length, ane half an inch in diameter. 4. A fish of the genus Syngnathus.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI