pilot
/ˈpī-lət/
noun
one employed to steer a ship : helmsman
a person who is qualified and usually licensed to conduct a ship into and out of a port or in specified waters
a person who flies or is qualified to fly an aircraft or spacecraft
verb
to act as a guide to : lead or conduct over a usually difficult course
to set and conn the course of
to act as pilot of
adjective
serving as a guiding or tracing device, an activating or auxiliary unit, or a trial apparatus or operation
a pilot study