Some fish guts on the counter ... pass the bucket (3)
I believe the answer is:
ugh
'some fish guts on the counter pass the bucket' is the definition.
I can't tell whether this definition defines the answer.
'some fish guts on the counter' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'on the counter' shows that the letters should be reversed in order (counter can mean in the opposite direction).
'hgu' is hidden in the letters of 'fish guts'.
'hgu' back-to-front is 'UGH'.
Can you help me to learn more?
(Other definitions for ugh that I've seen before include "Exclamation of disgust, at 22 ac say" , "Kind of hug - it's disgusting" , "How repulsive!" , "That's disgusting!" , "expression of revulsion" .)