HARDHEAD

noun the gray whale.

2. hardhead ·noun a california salmon; the steelhead.

3. hardhead ·noun clash or collision of heads in contest.

4. hardhead ·noun block's gurnard (trigla gurnardus) of europe.

5. hardhead ·noun the menhaden. ·see menhaden.

6. hardhead ·noun a coarse american commercial sponge (spongia dura).