Horny male one evicted from American car (4)
I believe the answer is:
buck
'horny male' is the definition.
'buck' can be an answer for 'male' (male deer). I'm not sure about the 'horny' bit.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for buck that I've seen before include "(Of a horse) jump vertically with legs stiff and back arched" , "Male - resist" , "A slangy American dollar, may be fast" , "Male kangaroo" , "Paper dollar" .)