All 4 Uses of
frontier
in
A Farewell to Arms
- What were you going to do if you had a mountain frontier? he asked.†
Book 3
- We don't want them to turn us back at the frontier.†
Book 4
- The frontier is a long way back.†
Book 4 *
- I don't think they let the Italians cross the frontier.†
Book 4
Definition:
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(frontier as in: the frontier of brain science) the most recent understandings and achievements in a changing field