Does it mean ‘love humanity'? (4)
I believe the answer is:
omen
'does it mean' is the definition.
I can't tell whether this defines the answer.
''love humanity'?' is the wordplay.
''love' becomes 'o' (love means zero in tennis).
'humanity'?' becomes 'men' (I can't justify this - if you can you should believe this answer much more).
'o'+'men'='OMEN'
Can you help me to learn more?
(Other definitions for omen that I've seen before include "Foreboding" , "Straw in the wind" , "Sign of things to come" , "Warning - sign" , "writing on the wall" .)