Verb
become flat or flatter
Source: WordNetThe landscape flattened Source: Internet
As a result, they flatten out like stratus clouds, giving them a layered appearance. Source: Internet
Following its one-time attack with its rockets, the pilot would dive his Natter, now effectively a glider, to an altitude of around convert, flatten out, release the nose of the aircraft and a small braking parachute from the rear fuselage. Source: Internet
For example, because they often flatten out large areas, they can be susceptible to fog in areas where fog rarely forms. Source: Internet
It will appear slightly bunched when you begin, but will flatten out as you continue the weaving pattern. Source: Internet
"The skilled Viscount eater will flatten out the foil and use it to make a small model or trinket." Source: Internet