Due (5)
'due' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for owing that I've seen before include "Due to, like debt" , "Still outstanding" , "(Of money) outstanding" , "Unsettled; on account" , "Unpaid" .)
'due' is the definition.
(synonyms)
This is all the clue.
(Other definitions for owed that I've seen before include "Had a duty to pay" , "(Sum) due for payment" , "to be paid" , "Was indebted" , "Was obliged to pay" .)