Supplies hose to cover end of street (6)
I believe the answer is:
stocks
'supplies' is the definition.
(stocking is a kind of supplying)
'hose to cover end of street' is the wordplay.
'hose' becomes 'socks' (term for socks or stockings).
'to cover' indicates putting letters inside.
'end of' suggests the final letters.
The final letter of 'street' is 't'.
'socks' enclosing 't' is 'STOCKS'.
(Other definitions for stocks that I've seen before include "Supplies of goods in store" , "Stores - an old form of punishment" , "Securities, investments" , "Village greens used to have these" , "Keeps" .)