noun
A roving motion; course without definite direction; lack of rule or method; chance.
(obsolete) Speed, full speed; impetuosity, force.
(obsolete) The full range of a bullet or other projectile; hence, the angle at which a weapon is tilted to allow the greatest range.
(figuratively, colloquial) An undefined, unknown or unimportant person; a person of no consequence.
(mining) The direction of a rake-vein.
(printing, historical) A frame for composing type.
adjective
Occurring for no particular reason; haphazard, unpredictable.
(statistics) Involving an outcome which is impossible to predict, but which may be represented by a probability distribution; in the ideal case, involving outcomes which are equally likely.
(computing) Pseudorandom; mimicking the result of random selection.
(informal) Selected for no particular reason; arbitrary; unspecified.
(informal) Being (part of) a varied, unrelated, and apparently arbitrary collection of things; diverse, heterogeneous.
(informal) Apropos of nothing; lacking context, relevance, or any connection to the previous situation; unexpected.
(informal) Of a person: characterized by or often saying random things; habitually using non sequiturs.
(UK, slang) Being out of the ordinary; unusual or unexpected; odd, strange, bizarre.
verb
(intransitive, now uncommon) To wander; to stray; to meander.