(intransitive) To flap or wave quickly but irregularly. / (intransitive) Of a winged animal: to flap the wings without flying; to fly with a light flapping of the wings.

simple past tense and past participle of add oil

Initialism of voltohmmeter. or volt-ohm-milliammeter

(pharmacology) A histamine antagonist, proposed as a treatment for excessive gastric acidity but withdrawn after human trials showed liver damage.