flatten

verb ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about flatten at Wordnik → Where our words come from →

1. To make something flat or flatter.

   As there was a lot of damage, we chose the heavy roller to flatten the pitch.

2. To press one's body tightly against a surface, such as a wall or floor, especially in order to avoid being seen or harmed.
3. To knock down or lay low.

   The prize fighter quickly flattened his challenger.