(idiomatic, humorous) An expression sometimes used when a person mentioned in the current conversation happens to arrive on the scene.

A medium-sized carnivorous marsupial (Sarcophilus harrisii) found exclusively on the island of Tasmania.

(computing) A simple wireless object that unobtrusively presents information.

(signal processing) The ratio of maximum permitted frequency deviation, σₘₐₓ to the maximum permitted modulating frequency, fiₘₐₓ.

(slang) A US marine.

(sociology) A person with deviant behaviour; a deviant, degenerate or pervert.

(intransitive) To go off course from; to change course; to change plans. / (intransitive, figuratively) To fall outside of, or part from, some norm; to stray. / (transitive) To cause to diverge.

(theology) The chief devil; Satan.

(transitive, idiomatic) to leave alone, unsupervised, without assistance.

(idiomatic) One who debates from a viewpoint which he or she may not actually hold, usually to determine its validity or simply for the sake of argument.