I think it's the diminutive of Callissa, traditionally female, Calvin would be for a boy, but Callie as a male nickname would sound too feminine
Girl i think, but a little unusual. I think it's short form of Callisa.
its harder for a boy to tell if a girl likes him
Bad boy
It means that they probably have had too much sex Edit: Lol XD
Callum Gablin's birth name is Callum Marc Giblin.
Callum Rees's birth name is Callum Aiden Bailey.
Callum Johnson's birth name is Robert Callum Johnson.
Callum McInerney's birth name is Callum Sullivan McInerney.
the name callum means dove
Callum Blue's birth name is Daniel James Callum Blue.
Callum Ormond is a boy on the run. He is he main character in the conspiracy 365 books.
Callum = Colombe
'callum' as in Callum T is the meaning of gay love and sexual attractions
Mark Callum's birth name is Mark John Adams.
Callum comes from the Latin word 'Colomba' which means a dove, and implies 'peace'.
cALLUM RULES