Two-wheeled handcart (6)
I believe the answer is:
barrow
'two-wheeled handcart' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for barrow that I've seen before include "Small hand-propelled cart" , "such as street-trader might have?" , "Ancient burial mound" , "where items are sold" , "Handcart; burial mound" .)