tallywag

noun3

1. •
   The black sea bass, Centropristis striata.

   • 72. CENTROPRISTIS STRIATA. (the black sea-bass, black-fish, tally-wag, hannahill, black-will, black harry) — 1890
2. •
   [in the plural] (slang, no longer used) A testicle.

   • And not forget that Pious Prince / Whose Tarriwags it held long since. / What tho’ that Codpiece’s dimension, / Shows something was of large extention — 1715
3. •
   (slang, no longer used) The penis.

   • Mrs. Hemstock (rather faintly): I canna abide to feel a man’s arms shiverin’ agen me. It ma’es me feel like a tallywag post hummin’. — 1941