English

Definition of the front line noun from the Oxford Advanced Learner's Dictionary

 

the front line

 noun
noun
BrE
 
; NAmE
 
[singular] Conflict
 
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  • an area where the enemies are facing each other during a war and where fighting takes place Tanks have been deployed all along the front line. front-line troops See related entries: Conflict
  • Idioms
    in the front line (of something)
     
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    doing work that will have an important effect on something a life spent in the front line of research
    See the Oxford Advanced American Dictionary entry: the front line