Acknowledge download I devoured about park (10)
I believe the answer is:
appreciate
'acknowledge' is the definition.
(appreciating is a kind of acknowledging)
'download i devoured about park' is the wordplay.
'download' becomes 'app' (phone or computer application).
'devoured' becomes 'ate' (to devour is to eat).
'about' says to put letters next to each other.
'park' becomes 'rec' (short for recreation ground).
'i'+'ate'='iate'
'iate' put after 'rec' is 'reciate'.
'app'+'reciate'='APPRECIATE'
(Other definitions for appreciate that I've seen before include "Be fully aware of" , "Treasure" , "Feel grateful" , "See < prize" , "Grow in value" .)