A ctenophore, a member of the phylum Ctenophora (the comb jellies).
A scyphozoan, a member of the class Scyphozoa (the true jellies).
A sudoku technique involving possible cell locations for a digit, or pair, or triple, in uniquely four rows and four columns only. This allows for the elimination of candidates around the grid.
jellyfishes
jellyfishes
noun
plural of jellyfish
jollify
jollify
verb
(intransitive) To engage in jollification; to carouse.