Things dangling from Biden's trousers, butt tucked in (8)
I believe the answer is:
pendants
'things dangling from biden's trousers' is the definition.
I can't tell whether this defines the answer.
'butt tucked in' is the wordplay.
'butt' becomes 'end' (I've seen this in other clues).
'tucked' becomes 'pants' (I am not sure about this - if you are sure you should believe this answer much more).
'in' indicates putting letters inside.
'end' inserted inside 'pants' is 'PENDANTS'.
Can you help me to learn more?
(Other definitions for pendants that I've seen before include "Hanging ornaments, often on necklace" , "Bits of jewellery" , "They hang around the neck" , "Items of jewellery" .)