Where planes taxi and sailor gets a little macho (6)

I believe the answer is:
tarmac
'where planes taxi' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'sailor gets a little macho' is the wordplay.
'sailor' becomes 'tar' (tar can mean a sailor).
'gets' is a charade indicator (letters next to each other).
'a little macho' becomes 'mac' (I can't justify this - if you can you should believe this answer much more).
'tar'+'mac'='TARMAC'
'and' is the link.
Can you help me to learn more?
(Other definitions for tarmac that I've seen before include "Surfaced area for plane to land" , "Road paving material" , "Planes taxi on it" , "Airport runway surface" , "black one" .)
