He searches place with gold in meet of rivers (8)
I believe the answer is:
explorer
'he searches' is the definition.
(someone who explores)
'place with gold in meet of rivers' is the wordplay.
I cannot quite see how this works, but
'place' could be 'pl' (I've seen this in other clues) and 'pl' is present in the answer.
'gold' could be 'or' ('or' is the heraldic name for gold) and 'or' is found in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for explorer that I've seen before include "Adventurer in unknown regions" , "Investigative traveller" , "One carrying out system-atic investigations" , "Traveller seeking discoveries" , "It helps to search" .)