Excludes a bachelor, one way and another (4)
I believe the answer is:
bans
'excludes' is the definition.
(I've seen this in another clue)
'a bachelor one way and another' is the wordplay.
'a bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'one' becomes 'a' (a thing is one thing).
'way' becomes 's' (Compass direction - South).
'and' becomes 'n' (common abbreviation for 'and').
'another' indicates anagramming the letters.
's'+'n'='sn'
'sn' with letters rearranged gives 'ns'.
'b'+'a'+'ns'='BANS'
(Other definitions for bans that I've seen before include "Forbids" , "Officially prohibits" , "Prohibiting decree" .)