hash-mark

hash mark

noun
1.
Informal.
a.
a service stripe.
b.
the symbol #.
2.
Football. the marking formed by either inbounds line intersecting with one of the lines delineating yardage between the goal lines.

Origin:
1905–10

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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