Pulse member finally ate with hesitation (6)
I believe the answer is:
legume
'pulse' is the definition.
(I've seen this before)
'member finally ate with hesitation' is the wordplay.
'member' becomes 'leg' (I've seen this before**).
'finally' says to take the final letters.
'with' means one lot of letters go next to another.
'hesitation' becomes 'um'.
The final letter of 'ate' is 'e'.
'e' after 'um' is 'ume'.
'leg'+'ume'='LEGUME'
(Other definitions for legume that I've seen before include "Plant that bears its seeds in a pod" , "Pea or bean pod" , "Glue me (anag) - climbing bean or pea plant" , "A vegetable for e.g. mule" , "Eg, pea, bean plant" .)