fli·er also fly·er 
(flīər)
(flīər)n.
1. One, such as an insect or bird, that flies with wings.
2. The pilot of an aircraft.
3. A passenger in an aircraft: special fares for business fliers.
4. A pamphlet or circular for mass distribution.
5. A step in a straight stairway.
6. Informal A daring venture.
7. often flyer
a. Australian A female kangaroo.
b. Australian An exceptionally swift kangaroo.