A junction designed to prevent congestion and gridlock. Vehicles may only enter the box-shaped area (usually marked with crossing diagonal lines) if their exit from the junction is clear, or in some cases if they intend to make a turn.

plural of box junction

plural of snuff box

plural of mold box

A box in which molten steel is hydraulically compressed.

plural of weather box

Synonym of weather house (“mechanical device to indicate atmospheric conditions”)

(dated) A box for holding cosmetic powder, with a puff for applying it.

plural of puff-box

Alternative spelling of box elder