Wiktionary
fall over
vb. 1 (context intransitive idiomatic English) To fall from an upright or standing position to a horizontal or prone position. 2 (context intransitive idiomatic English) Of an argument, to fail to be valid. 3 (context intransitive idiomatic informal computing English) Of a computer program or system, to crash.
WordNet
fall over
v. fall forward and down; "The old woman went over without a sound" [syn: go over]
Usage examples of "fall over".
She is a ripe stalk planted in shallow soil, top-heavy, about to fall over roots-up.