Mother with pig wanting any type of wood (8)
I believe the answer is:
mahogany
'type of wood' is the definition.
(I know that mahogany is a type of wood)
'mother with pig wanting any' is the wordplay.
'mother' becomes 'ma' (Ma is another word for mother or mum).
'with' means one lot of letters go next to another.
'pig' becomes 'hog' (synonyms).
'wanting' means one lot of letters go next to another.
'ma'+'hog'+'any'='MAHOGANY'
(Other definitions for mahogany that I've seen before include "Dark wood" , "Old Cornish drink" , "Type of wood" , "Reddish-brown wood" , "Tropical timber" .)