Grunt, having nothing to write with? (4)
I believe the answer is:
oink
'grunt' is the definition.
(I know that grunt can be written as oink)
'nothing to write with?' is the wordplay.
'nothing' becomes 'O' (O resembles 0).
'to' means one lot of letters go next to another.
'write with?' becomes 'ink' (I've seen this in another clue. I am not sure about the 'with?' bit.).
'o'+'ink'='OINK'
'having' is the link.
Can you help me to learn more?
(Other definitions for oink that I've seen before include "What you get from pen" , "what we hear from Berkshire?" , "Noise made by a pig" , "Porker's cry" , "Beastly sound" .)