Possibly a curse from outer space? (6)
I believe the answer is:
saucer
'outer space?' is the definition.
The definition and answer can be both shapes as well as being singular nouns.
Maybe there's a link between them I don't understand?
'possibly a curse' is the wordplay.
'possibly' is an anagram indicator.
'a'+'curse'='acurse'
'acurse' with letters rearranged gives 'SAUCER'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for saucer that I've seen before include "Small dish, goes with cup" , "Car use (anag)" , "Cup rest" , "Part of a tea set" , "If flying, it would have alien pilots" .)