Third-person singular simple present indicative form of flat out

A village in Frampton parish, Boston borough, Lincolnshire, England (OS grid ref TF2643).

An inverted U shape. / An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward. / (architecture) An architectural element having the shape of an arch

Pennisetum glaucum (pearl millet) / Setaria parviflora (marsh bristlegrass) / Setaria pumila (yellow foxtail, pigeon grass, cattail grass)