Famous ship might blossom (9)
I believe the answer is:
mayflower
'famous ship' is the definition.
'mayflower' can be an answer for 'ship' (I have seen 'old ship' mean 'mayflower' so perhaps 'ship' could also mean 'mayflower'). I'm unsure of the 'famous' bit.
'might blossom' is the wordplay.
'might' becomes 'may' (I've seen this before).
'blossom' becomes 'flower' (synonyms).
'may'+'flower'='MAYFLOWER'
Can you help me to learn more?
(Other definitions for mayflower that I've seen before include "old ship" , "Pilgrims Fathers' ship" , "emigrants' vessel?" , "Ship on which the Pilgrim Fathers sailed to America" , "vessel crossing ocean" .)