Nocturnal visitor getting bishop to budge hurriedly (6)
I believe the answer is:
bedbug
'nocturnal visitor' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'getting bishop to budge hurriedly' is the wordplay.
'getting' means one lot of letters goes inside another.
'bishop' becomes 'B' (chess abbreviation).
'hurriedly' indicates an anagram (writing too quickly, you might mix up letters).
'budge' is an anagram of 'bedug'.
'b' inserted within 'bedug' is 'BEDBUG'.
Can you help me to learn more?
(Other definitions for bedbug that I've seen before include "Sleeper biter?" , "Night-time bloodsucker" , "Bloodsucking insect associated with dirty houses" , "Bloodsucker's" , "It sucks your blood while you sleep" .)