Fit American comes back with one item of furniture (8)
I believe the answer is:
suitable
'fit' is the definition.
(similar in meaning)
'american comes back with one item of furniture' is the wordplay.
'american' becomes 'US' (United States).
'comes back' says the letters should be written backwards.
'with' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'item of furniture' becomes 'table' (table is a type of furniture item).
'us' written backwards gives 'su'.
'su'+'i'+'table'='SUITABLE'
(Other definitions for suitable that I've seen before include "Fit" , "In keeping" , "Appropriate, meet" , "Appropriate, fitting" , "In character" .)