Current account opened by e.g. Queen of Hearts? (7)
I believe the answer is:
cardiac
'of hearts?' is the definition.
(relating to the heart)
'current account opened by e g queen' is the wordplay.
'current' becomes 'I' (symbol for electric current).
'account' becomes 'ac' (abbreviation for account).
'opened by' means one lot of letters go next to another (some letters open or go before others).
'e g queen' becomes 'card' (queen is a type of playing card).
'i'+'ac'='iac'
'iac' put after 'card' is 'CARDIAC'.
(Other definitions for cardiac that I've seen before include "Physiologically, of the heart" , "Appertaining to the heart" , "Pertaining to the heart" , "Of the heat, perhaps illness" , "Relating to 8 down, part one" .)