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The Collaborative International Dictionary
Cowlstaff

Cowlstaff \Cowl"staff`\ (koul"st?f`), n. [Cowl a vessel + staff.] A staff or pole on which a vessel is supported between two persons.
--Suckling.

Wiktionary
cowlstaff

n. A staff used to carry a cowl or other burden, especially held by two people on their shoulders.