Noun: hashmark
- An insignia worn to indicate years of service
"The veteran's sleeve was adorned with multiple hashmarks";
- service stripe, hash mark
- (American football) any of the short lines marked on a football field to help determine position
"The ball was placed just inside the hashmarks"
- The symbol #
"He used the hash mark to indicate the apartment number in the address";
- octothorpe [N. Amer], octothorp [N. Amer], pound sign [US], hash [Brit], pound [US], number sign, hash symbol, hash sign [Brit]
Derived forms: hashmarks, hash marks
Encyclopedia: Hashmark
Hash mark