Enterprise, say, opening small joint (9)
I believe the answer is:
spaceship
'enterprise' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'opening small joint' is the wordplay.
'opening' becomes 'space' (I've seen this in another clue).
'small' becomes 's' (abbreviation - e.g. clothes size).
'joint' becomes 'hip joint' (part of body).
'space'+'s'+'hip'='SPACESHIP'
'say' is the link.
Can you help me to learn more?
(Other definitions for spaceship that I've seen before include "Transport that's out of this world" , "orbiter, perhaps" , "Challenger possibly" , "long-distance vessel" , "Craft for an astronaut" .)