A backup or assistant pilot of an aircraft.
To serve as relief or assistant pilot.
A primary assistant; vice-leader.
A somewhat small town, between a number one and a number three, where the success of a theatrical performance is unlikely to be very great.
The batsman who opens alongside the number one, but does not face the first delivery.
mistress (the other woman in an extramarital relationship, generally including sexual relations)
A pencil with hardness level 2.
A first mate.
Feces; the act of defecation.