- a long, narrow, triangular or swallow-tailed flag borne on a lance as an ensign, as formerly by knights and lancers
- any flag or pennant
- a pinion; wing
Origin of pennonMiddle English penon ; from Old French ; from penne, a feather: see pen
- A long narrow banner or streamer borne upon a lance.
- A pennant, banner, or flag.
- A pinion; a wing.
Origin of pennonMiddle English, from Old French penon, streamer, feather of an arrow, augmentative of penne, feather, from Latin penna; see pet- in Indo-European roots.