firing line

1. 1.

   the line from which soldiers deliver fire

   Broaderline
2. 2.

   the most advanced and responsible group in an activity

   “the firing line is where the action is”

   Broaderclass

Questions about firing line

What does firing line mean?

firing line means "the line from which soldiers deliver fire". That is the primary sense; the word has 2 in total, listed in full on this page.

Is firing line a common word?

firing line is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.