Crawler busy worker let out (6)
I believe the answer is:
beetle
'crawler' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'busy worker let out' is the wordplay.
'busy worker' becomes 'bee' (I've seen this in another clue).
'out' indicates an anagram (out can mean wrong or inaccurate).
'let' with letters rearranged gives 'tle'.
'bee'+'tle'='BEETLE'
Can you help me to learn more?
(Other definitions for beetle that I've seen before include "Insect with protective forewings" , "Coleopteran" , "8's (very small) friend" , "Iconic German car, first produced in 1938" , "Hurry - insect" .)