'Fanion' definitions:

Definition of 'fanion'

From: WordNet
noun
A small flag used by surveyors or soldiers to mark a position

Definition of 'Fanion'

From: GCIDE
  • Fanion \Fan"ion\, n. [See Fanon.]
  • 1. (Mil.) A small flag sometimes carried at the head of the baggage of a brigade. [Obs.] [1913 Webster]
  • 2. A small flag for marking the stations in surveying. [1913 Webster]