Flyer left in drier houses (8)
I believe the answer is:
airliner
'flyer' is the definition.
(airliner is a kind of aircraft)
'left in drier houses' is the wordplay.
'left' becomes 'L' (common abbreviation).
'drier' becomes 'airer' (frame for airing wet clothes).
'houses' means one lot of letters goes inside another.
'l'+'in'='lin'
'lin' going inside 'airer' is 'AIRLINER'.
(Other definitions for airliner that I've seen before include "Passenger aircraft" , "Large aircraft" , "Commercial plane" , "Passenger plane" , "Eg, Jumbo, Concorde" .)