Kitty taken from cup stays out (8)
I believe the answer is:
pussycat
'kitty' is the definition.
(I know that kitty can be written as pussycat)
'cup stays out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'cup'+'stays'='cupstays'
'cupstays' is an anagram of 'PUSSYCAT'.
'taken from' acts as a link.
(Other definitions for pussycat that I've seen before include "Easy-going person" , "Domesticated feline" , "asked what's new in cinema?" , "One seeing owl" , "origin of part of 12 [GUITAR] ?" .)