pen·celalso pen·sil (pĕn′səl)
A narrow flag, streamer, or pennon, especially one carried at the top of a lance or spear.
[Middle English, from Old French penoncel, diminutive of penon, pennon; see pennon.]
(Heraldry) a small pennon, originally one carried by a knight's squire
[C13: via Anglo-French from Old French penoncel a little pennon]
a small pennon, as at the head of a lance.
[1225–75; Middle English < Anglo-French, syncopated variant of penoncel, diminutive of penon pennon]