(jir) v.i.
To speak or shout in a derisive, mocking manner; scoff.
—v.t. To treat with derision or mockery; scoff at. See synonyms under MOCK, SCOFF.
—noun A derisive and flouting word or speech. See synonyms under SNEER. [? OE cēir clamor]
—jeer′er noun
—jeer′ing·ly adverb

(jir) noun Naut.
A tackle for raising or lowering a lower yard of a sailing ship. [? <GEE² + -ER¹]