(rare) One who pilots or steers.

plural of piloting

(obsolete) pilotry

plural of piloter

A small-scale chemical engineering facility designed to research the full-scale production of a product.

Either of two species of whale in the genus Globicephala, dark grey in colour.

A proof of concept; an initial prototype.

A marine fish, Naucrates ductor, that often follows large vessels and sharks.

(slang) A clergyman, especially a military chaplain or padre.

(meteorology) A small unmanned balloon whose ascent is followed by a theodolite to obtain data for the computation of the speed and direction of winds in the upper air.