A large cannon; specifically, the large 15th cannon at Edinburgh Castle (more usually called ‘Mons Meg’), or the cannon used to defend Londonderry during the siege of 1688-9.

(informal, vulgar) A jet of mucus deliberately expelled from one's nostril.

The regulation requiring all traffic (travelling on a road or otherwise) to keep either to the left or the right. / (nautical) A regulation concerning safe handling of vessels on seaways.

plural of robber baron

a fish found in brackish coastal waters of the northern and northwestern Caspian Sea (Rutilus caspicus, formerly recognized as subspecies of the common roach)

Physically very solid; very difficult to move. / (figuratively) Very strong and dependable.

A style of hot rod or custom car that imitates or exaggerates the hot rods of the 1940s, 1950s, and 1960s. It is distinct from the "traditional" hot rod, which is an accurate re-creation or period-correct restoration of a hot rod from the same era.

clear, colourless form of the silica-based mineral quartz, often called "pure quartz" or "clear quartz".

plural of roadside hawk

Buteo magnirostris, a relatively small bird of prey found in Latin America