Gather pear was thrown (4)
I believe the answer is:
reap
'gather' is the definition.
(reaping is a kind of gathering)
'pear was thrown' is the wordplay.
'was thrown' indicates anagramming the letters.
'pear' anagrammed gives 'REAP'.
(Other definitions for reap that I've seen before include "Cut or gather (a harvest)" , "'As you sow, so shall you . . . .'" , "Gather 23dn" , "Cut and gather (crop)" , "Get -- derive" .)