Sēa'-ăd'der, n.
n. (Ichth.) A fish of the British seas, of an elongated and slender form, with fifteen short dorsal spines, and the entire lateral line covered with carinated scales; Gasterosteus spinachia.
n. (Ichth.) A fish of the British seas, of an elongated and slender form, with fifteen short dorsal spines, and the entire lateral line covered with carinated scales; Gasterosteus spinachia.