Seem sad, having very little cash (4)
I believe the answer is:
weep
'seem sad' is the definition.
I can't tell whether this defines the answer.
'very little cash' is the wordplay.
'very little' becomes 'wee' (I've seen this in another clue).
'cash' becomes 'p' (abbreviation for pence).
'wee'+'p'='WEEP'
'having' is the link.
Can you help me to learn more?
(Other definitions for weep that I've seen before include "Bawl" , "Display sorrow" , "pipe" , "Pee-pee" , "Cry, shed tears" .)