(intransitive, idiomatic) To fall from an upright or standing position to a horizontal or prone position. / (intransitive, idiomatic) Of an argument, to fail to be valid.

Massive waterfalls located on the Niagara River. / A city in New York near the Falls. / A city in Ontario near the Falls.

Alternative spelling of shortfall

Alternative spelling of falloff

Alternative spelling of fallout

Used other than figuratively or idiomatically: see fall, back. / To retreat. / To fail to fulfill a promise or purpose.

Alternative spelling of dewfall

(nautical) The rope, or rather the end of the rope, of a tackle, to which the power is applied.

(intransitive) to be merged or coalesce; to become identical / (intransitive, obsolete, of the eyes) to close; to be closed / (intransitive, obsolete) to contract

(intransitive) To fall to the ground. To collapse. / (nautical) To sail or drift toward the mouth of a river or other outlet. / (intransitive, figuratively) To fail.