(anatomy) Relating to the sole of the foot.

(historical, also figuratively) On an early naval vessel or pirate ship: to be forced to walk off the end of a gangplank (a plank of wood extending outwards from the side of the vessel) and plunge into the ocean and drown, used as a method of killing.

A succulent annual, Mesembryanthemum crystallinum, of the fig marigold family, having pale pink flowers and fleshy leaves covered with glistening water vesicles.

A rebate plane.

Any of several unrelated plants modified to capture and digest insects, which supply nitrogen that may otherwise be unavailable in their habitat.

any of several unrelated plants modified to capture and digest animals, especially insects, which supply nitrogen that may otherwise be unavailable in their habitat

a hand plane designed for cutting rebates in wood

plural of planum

(geometry) The set of all points in a planar coordinate system.

(chemistry) An industrial facility used to manufacture chemical compounds.