The Collaborative International Dictionary of English v.0.48:
Lance fish \Lance" fish`\n. (Zool.) A slender marine fish of the genus Ammodytes, especially Ammodytes tobianus of the English coast; -- called also sand lance. [1913 Webster] LancegayWordNet (r) 3.0 (2006):
sand lance n 1: very small silvery eellike schooling fishes that burrow into sandy beaches [syn: sand lance, sand launce, sand eel, launce]