Horse having drink by entrance to orchard? (5)
I believe the answer is:
pinto
'horse' is the definition.
(I know that pinto is a type of horse)
'drink by entrance to orchard?' is the wordplay.
'drink' becomes 'pint' (I've seen this before).
'by' means one lot of letters go next to another.
'entrance to' indicates taking the first letters.
The first letter of 'orchard' is 'o'.
'pint'+'o'='PINTO'
'having' is the link.
(Other definitions for pinto that I've seen before include "A piebald pony" , "H [HORSE]" , "Spotted or piebald horse" , "Mount" , "Piebald horse (US)" .)