— flattener , n.
/flat"n/ , v.t.
1. to make flat.
2. to knock down: The boxer flattened his opponent in the second round.
v.i.
3. to become flat.
4. flatten in , Naut. See flat 1 (def. 57).
5. flatten out , Aeron. to fly into a horizontal position, as after a dive.
[ 1620-30; FLAT 1 + -EN 1 ]
Syn. 2. ground, fell, prostrate, deck, floor.