Sentence:  In the nineteenth century, 1811 to be exact, the <WSD>jeers</WSD> were unrove after the yard was slung, the weight of the yard being borne by chain slings. The <WSD>jeers</WSD> used then were a treble block lashed to the mast head through a hole in the center of the top 
Meaning of the word marked with <WSD> tags:  An assemblage or combination of tackles, for hoisting or lowering the yards of a ship.