'hashmark' definitions:

Definition of 'hashmark'

(from WordNet)
noun
An insignia worn to indicate years of service [syn: service stripe, hashmark, hash mark]

Definition of 'hashmark'

From: GCIDE
  • hashmark \hash"mark`\ n. (Mil.) an insignia worn on the uniform to indicate years of service.
  • Syn: service stripe, hash mark. [WordNet 1.5]