- A hedge - Obstacle - Obstacle, hindrance - Obstruction - Slimness - A carpentry obstruction, stockade, or other obstacle made
in a passage in order to stop an enemy. - A fortress or fortified town, on the frontier of a
country, commanding an avenue of approach.
- shark hitchhiker - Sucking fish - Type of fish - Delay; obstacle; hindrance. - Any one of several species of fishes belonging to Echeneis,
Remora, and allied genera. Called also sucking fish. - An instrument formerly in use, intended to retain parts in
their places.
- Put off - Restrain - Check; hindrance; restraint; obstacle. - The projection or loop on the thill of a vehicle. to
which a strap of the harness is attached, to hold back a carriage when
going down hill, or in backing; also, the strap or part of the harness
so used.
- Barrier - Blockage - Extremely obscure instruction is a stumbling block - Hindrance - hindrance to progress - The act of obstructing, or state of being obstructed. - That which obstructs or impedes; an obstacle; an
impediment; a hindrance.
- Building piece - Obstruct - Pulley system, ... and tackle - Shut out - Ward off - A piece of wood more or less bulky; a solid mass of wood,
stone, etc., usually with one or more plane, or approximately plane,
faces; as, a block on which a butcher chops his meat; a block by which
to mount a horse; children's playing blocks, etc. - The solid piece of wood on which condemned persons lay
their necks when they are beheaded.