Tense French artist shows what's in bottom drawer (9)
I believe the answer is:
trousseau
'what's in bottom drawer' is the definition.
(materials for married life collected in a drawer)
'tense french artist' is the wordplay.
'tense' becomes 't' (abbreviation used in many dictionaries).
'french artist' becomes 'rousseau' (Henri Rousseau).
't'+'rousseau'='TROUSSEAU'
'shows' acts as a link.
(Other definitions for trousseau that I've seen before include "Bridal gear" , "wedding gear" , "Bride's outfit" , "train etc" , "Linen for a bride" .)