Definition of "Due" :

noun: that which is deserved or owed

"Give the devil his due."

noun: a payment that is due (e.g., as the price of membership)

"The society dropped him for non-payment of dues."

adjective: owed and payable immediately or on demand

"Payment is due."

adjective: suitable to or expected in the circumstances

"All due respect."

adjective: capable of being assigned or credited to

"The cancellation of the concert was due to the rain."

adjective: scheduled to arrive

"The train is due in 15 minutes."

adverb: directly or exactly; straight

"Went due North."