n. [ Cf. Gael. duileasg; duille leaf + uisge water. Cf. Whisky. ] (Bot.) A seaweed of a reddish brown color, which is sometimes eaten, as in Scotland. The true dulse is Sarcophyllis edulis; the common is Rhodymenia. [ Written also dillisk. ] [ 1913 Webster ]

The crimson leaf of the dulse is seen
To blush like a banner bathed in slaughter. Percival. [ 1913 Webster ]

(Bot.) A variety of edible seaweed (Laurencia pinnatifida) distinguished for its pungency. [ Scot. ] Lindley. [ 1913 Webster ]