[V] ~ (on / upon sb/sth) to move suddenly forwards in order to attack or catch sb/sth:
The lion crouched ready to pounce. * The muggers pounced on her as she got out of the car. * Owen pounced on the loose ball and scored.
PHRASALVERBS
pounce on / upon sth to quickly notice sth that sb has said or done, especially in order to criticize it
SYNSEIZEON/UPON:
His comments were pounced upon by the press.
