One grand Conservative in club, a tigerish sort? (3,3)
I believe the answer is:
big cat
'a tigerish sort?' is the definition.
(tigers are big cats)
'one grand conservative in club' is the wordplay.
'one' becomes 'i' (Roman numeral).
'grand' becomes 'g' (G is short for grand as in a thousand).
'conservative' becomes 'C' (UK political abbreviation).
'in' means one lot of letters goes inside another.
'club' becomes 'bat' (as in sporting equipment).
'i'+'g'+'c'='igc'
'igc' placed into 'bat' is 'BIG CAT'.
(Other definitions for big cat that I've seen before include "Lion, for example" , "One may have pride" , "ounce, say" , "Lion or tiger, say" , "Any large wild feline, like tiger or cheetah" .)