Discovering this table in wood is tasteless (10)
I believe the answer is:
philistine
'tasteless' is the definition.
(I've seen this before)
'discovering this table in wood' is the wordplay.
'discovering' means to look at the middle letters (I've seen 'discovered' mean this (dis-covered - outer letters removed)).
'table' becomes 'list'.
'in' means one lot of letters goes inside another.
'wood' becomes 'pine' (pine is a type of wood).
The middle of 'this' is 'hi'.
'hi'+'list'='hilist'
'hilist' inserted into 'pine' is 'PHILISTINE'.
'is' acts as a link.
(Other definitions for philistine that I've seen before include "one who's lowbrow?" , "One hostile to culture" , "Someone indifferent to culture and the arts" , "One indifferent to culture" , "Tasteless" .)