verb

• (intransitive, with at) To utter sarcastic or mocking comments; to speak with mockery or derision; to use taunting language.
  "But when he saw her toy, and gibe, and geare, / And passe the bonds of modest merimake, / Her dalliance he despisd, and follies did forsake."
• (transitive, archaic) To mock; treat with mockery; to taunt.
  "And if we cannot jeer them, we jeer ourselves."

noun

• (nautical) A gear; a tackle.
• (nautical, in the plural) An assemblage or combination of tackles, for hoisting or lowering the yards of a ship.
  "In the nineteenth century, 1811 to be exact, the jeers were unrove after the yard was slung, the weight of the yard being borne by chain slings. The jeers used then were a treble block lashed to the mast head through a hole in the center of the top"