Source : Webster's Revised Unabridged Dictionary (1913)

Flo \Flo\ (fl[=o]), n.; pl. {Flon} (fl[=o]n). [AS. fl[=a],
   fl[=a]n.]
   An arrow. [Obs.] --Chaucer.

Flon \Flon\, n. pl.
   See {Flo}. [Obs.] --Chaucer.