Humorous daughter has curl (5)
I believe the answer is:
droll
'humorous' is the definition.
('droll' can be similar in meaning to 'humorous')
'daughter has curl' is the wordplay.
'daughter' becomes 'd'.
'has' says to put letters next to each other.
'curl' becomes 'roll' ('roll' can be a synonym of 'curl').
'd'+'roll'='DROLL'
(Other definitions for droll that I've seen before include "amusing, in a strange way" , "Drily witty" , "Humorous or whimsical" , "Drily amusing" , "rum" .)