(roofing) An insulation board used over closed cell plastic insulation (e.g., polyisocyanurate) to prevent blistering when used in conjunction with hot bituminous membranes.

(biology) A crystalline structure, within the core of an endospore, containing endotoxins that act as pesticides

(roofing) noncombustible board stock material of low thermal conductivity placed between two elements of a roof assembly.

(Australia) A type of fishing boat used in Victoria, Australia, until the 1950s, latterly reinvented as a recreational sailboat.

A device used for recreation, athletic training, circus acts, etc. consisting of a rectangular or circular board on a fulcrum on which board the user attempts to balance.

plural of body modification

Deliberate physical alteration of the human body for aesthetic purposes, such as tattooing and piercing.

A race between rowing crews. / (Cockney rhyming slang) The face. / (gambling, slang) A fixed horse race, with a specific horse arranged to win in advance.

A political institution which holds the legislative power in a state, and often controls the executive power. / Its equivalent, exercising legislative power at a sub-state administrative level.

A hook attached to a pole used for pulling or pushing boats, rafts, logs or other objects to or from the side of a boat. / (by extension) A pole or rod with such a hook at one end.