front line: Meaning and Definition of

front' line'

Pronunciation: [key]
  1. front (def. 9).
  2. the visible forefront in any action, activity, or field: TV reporters are constantly involved in the front line of events.
  3. See
  4. See(def. 2b).

front-line

Pronunciation: (frunt'līn"), [key]
— adj.
  1. located or designed to be used at a military front line: a front-line ambulance helicopter.
  2. of, pertaining to, or involving the forefront in any action, activity, or field: a front-line TV reporter.
  3. highly experienced or proficient in the performance of one's duties.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.