v. 25B6; verb
Tom flattened the crumpled paper : MAKE/BECOME FLAT, make/become even, smooth (out/off), level (out/off).
the cows flattened the grass : COMPRESS, press down, crush, squash, compact, trample.
tornadoes can flatten buildings in seconds : DEMOLISH, raze (to the ground), tear down, knock down, destroy, wreck, devastate, obliterate; N. Amer. informal total.
(informal) Flynn flattened him with a single punch : KNOCK DOWN/OVER, knock to the ground, fell, floor, prostrate; informal deck; Brit. informal knock for six.
I flattened a drunken heckler : HUMILIATE, crush, quash, squash, take down a peg or two, put someone in their place; informal put down, cut down to size.