Webster's Revised Unabridged Dictionary · 1913

Pennant

Pennant (pen"nant) , noun

[Old English penon, penoun, pynoun, Old French penon, French pennon, from Latin penna feather. See Pen a feather, and compare Pennon, Pinion.]

(a)
(Nautical) A small flag; a pennon. The narrow pennant, or long pennant (called also whip or coach whip) is a long, narrow piece of bunting, carried at the masthead of a government vessel in commission. The board pennant is an oblong, nearly square flag, carried at the masthead of a commodore's vessel.
(b)
(Nautical) A rope or strap to which a purchase is hooked.
With flags and pennants trimmed. — Drayton