Six-footer among banyan trees (3)
I believe the answer is:
ant
'six-footer' is the definition.
(ants have six feet)
'among banyan trees' is the wordplay.
'among' indicates the answer is hidden within the clue.
'ANT' is hidden within 'banyan trees'.
(Other definitions for ant that I've seen before include "that may be a soldier" , "Little boy" , "A soldier, for one" , "Worker on the hill" , "Social worker" .)