hardtail

noun4

1. •
   A bicycle or motorcycle without rear suspension.
2. •
   (A) jack (edible fish of the genus Caranx or Trachurus).
3. •
   (New-England) A small scombrid, especially a little tunny or bonito.

   • But if fishing for striped bass is a piscatorial religion, then fishing for hardtails is its cultish counterpart. — 2020
4. •
   (slang, old-fashioned) A mule.

   • He'll ride a horse now and then, but he prefers them long-eared hardtails.