Webster's Revised Unabridged Dictionary · 1913

Bourdon

Bourdon ({not transcribed}) , noun

[French, from Latin burdo mule, esp. one used for carrying litters. Compare Sp. muleta a young she mule; also, crutch, prop.]

A pilgrim's staff.

Bourdon ({not transcribed}) , noun

[F. See Burden a refrain.]

(a)
(Music) A drone bass, as in a bagpipe, or a hurdy-gurdy. See Burden (of a song.)
(b)
(Music) A kind of organ stop.