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Webster 1913 Edition

Noun.

[Turk. & Ar.

zambūrak

, fr. Ar.

zambūr

a hornet.]

(Mil.)

A small cannon supported by a swiveled rest on the back of a camel, whence it is fired, – used in the East.

zumbooruk ‎(plural zumbooruks)

Alternative spelling of zamburak
- 1971, Anthony Burgess, M/F (Penguin 2004), page 87:
  It was a long one, ranging from (but I may have misremembered) antipedobaptism to the illegal importation of zumbooruks.