Kind, offer small boat, money as payment (6)
I believe the answer is:
tender
I believe this is a quintuple definition!!
'kind' is the first definition.
(tender can mean kind or thoughtful)
'offer' is the second definition.
(tender can mean to offer something)
'small' is the third definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?
'boat' is the fourth definition.
(tender is a kind of boat)
'money as payment' is the fifth definition.
(as in legal tender)
Can you help me to learn more?
(Other definitions for tender that I've seen before include "carer's > inexperienced" , "Soft - gentle - nurse" , "Bid - not toughened" , "Gentle and sore" , "Rented (anag.)" .)