Taken from outside, a small bed, a garment (5)
I believe the answer is:
cotta
'small bed a garment' is the definition.
I can't tell whether this defines the answer.
'taken from outside a' is the wordplay.
'taken from' becomes 'cott' (I can't justify this - if you can you should believe this answer much more).
'outside' says to put letters next to each other (outside can mean adjacent to).
'cott'+'a'='COTTA'
Can you help me to learn more?
(Other definitions for cotta that I've seen before include "Vestment" , "tunic for the priest" , "Short church garment" , "priestly garment" , "Short surplice worn by Catholic priests -- to act (anag)" .)