The term ACE, E.G. can be found in four different crossword solutions: AIRMAN (6 letters), PILOT (5 letters), TRIAD (5 letters), and AVIATOR (7 letters). An AIRMAN is a member of the air force, a PILOT is someone who flies an aircraft, a TRIAD is a group of three people, and an AVIATOR is someone who operates an aircraft. Finally, a CARD is a flat, usually rectangular piece of stiff paper or thin cardboard, typically intended for writing or printing on.