shank-nag

Meanings:

• 1.

  BritishAustralianUS regionaldialectalinformal
  • A thin, old, or worn-out horse; a nag that is scrawny, poorly kept, or of little value.

• 2.

  generalinformalderogatory
  • A disparaging term for a person regarded as useless, scrawny, or of little consequence; an unkempt or inferior individual (figurative extension).