English Noun sea corn (plural sea corns) A yellow cylindrical mass of egg cases of certain species of whelks, resembling an ear of maize. Anagrams coarsen, canoers, Creason, corneas, Sarceno, sorance, Croesan, carnose, narcose, Carones, earcons, Coreans Wikiwand - on Seamless Wikipedia browsing. On steroids.