n A fall, trip or substantial misstep.
n An error or blunder.
n A clumsy walk.
v (intransitive) To trip or fall; to walk clumsily.
v (intransitive) To make a mistake or have trouble.
v (transitive) To cause to stumble or trip.
v (transitive, figurative) To mislead; to confound; to cause to err or to fall.
v To strike or happen (upon a person or thing) without design; to fall or light by chance; with on, upon, or against.