Love of the French lyric poems (4)
I believe the answer is:
Here is my best explanation:
'lyric poems' is the definition.
(ode is a kind of lyric poem)
'love of the french' is the subsidiary indication.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'of the french' becomes 'des'.
(Other definitions for odes that I've seen before include "Lyric poems", "Poems in praise", "Lyrical poems", "To a Skylark, To a Nightingale etc" and "Keats was fond of them".)