Definition of runaway

• n. - One who, or that which, flees from danger, duty, restraint, etc.; a fugitive.
• n. - The act of running away, esp. of a horse or teams; as, there was a runaway yesterday.
• a. - Running away; fleeing from danger, duty, restraint, etc.; as, runaway soldiers; a runaway horse.
• a. - Accomplished by running away or elopement, or during flight; as, a runaway marriage.
• a. - Won by a long lead; as, a runaway victory.
• a. - Very successful; accomplishing success quickly; as, a runaway bestseller.