Bald (8)
'bald' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for hairless that I've seen before include "Furious" , "Bald" , "suffering shock loss" .)
(Other definitions for eagle that I've seen before include "high-flier" , "good score" , "Erne, perhaps" , "Coin made of gold" , "Flyer" .)