Girl’s name that is introduced by South America (5)
I believe the answer is:
susie
'girl's name' is the definition.
(I've seen this before)
'that is introduced by south america' is the wordplay.
'that is' becomes 'ie' (abbreviation for id est, 'that is' in Latin).
'introduced by' says to put letters next to each other.
'south' becomes 's' (abbreviation).
'america' becomes 'US' (United States).
's'+'us'='sus'
'ie' after 'sus' is 'SUSIE'.
(Other definitions for susie that I've seen before include "Girl's name" , "Wake Up Little - (Everly Brothers)" , "Old song: ''If you knew . . . . . like I know . . . . .''" , "Tongue-twister sister sewing shirts for soldiers" , "Woman" .)