truss-hoop

Century Dictionary and Cyclopedia

1. n. In mast-making, a heavy iron band placed about the mast, and to which the after end of the truss is confined.
2. n. In coopering, a temporary hoop which may be placed around a barrel and tightened, to draw the staves snugly together or to hold them in position while one that has become broken or decayed is being replaced.