Definitions for "Flatten out"
when a horse drops his head almost on a straight line with its body. May indicate exhaustion.
When a horse drops his head almost on straight line with body, generally from exhaustion.
A very tired horse that slows considerably, dropping its head on a straight line with its body. Some horses, however, like to run with their heads lowered.
Keywords:  flatter, landscape
become flat or flatter; "The landscape flattened"
Keywords:  knocks, dog, arc, jump, curved
A jumping problem where the dog takes off too soon (resulting in a flat, rather than curved arc over the jump) and knocks down the bar.