Article stuck in piece of furniture may be necklace component (4)
I believe the answer is:
bead
'be necklace component' is the definition.
(I've seen this before)
'article stuck in piece of furniture' is the wordplay.
'article' becomes 'a' (indefinite article).
'stuck in' is an insertion indicator.
'piece of furniture' becomes 'bed' (bed is a kind of piece of furniture**).
'a' placed into 'bed' is 'BEAD'.
'may' acts as a link.
(Other definitions for bead that I've seen before include "Glass ball" , "Bauble" , "bit off necklace, say" , "Item on a necklace" , "Small drop of moisture" .)