1. (n.) The common sand shark. See under Snad.

2. (n.) A small California shark (Heptranchias maculatus), which is taken for its oil.

3. (n.) A Pacific Ocean shark (Hexanchus corinus).

4. (n.) A ganoid fish of the Sturgeon family (Scaphirhynchus platyrhynchus) of the Mississippi and Ohio rivers; -- called also white sturgeon.