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Webster 1913 Edition

Noun.

(Naut.)

A person employed to ascertain the bulk or size of goods, in order to fix the amount of freight or dues payable on them.

bulker ‎(plural bulkers)

(nautical) A bulk dry goods cargo ship.
(nautical) A person employed to ascertain the bulk or size of goods, in order to fix the amount of freight or dues payable on them.