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While (n.) Space of time, or continued duration, esp. when short; a time; as, one while we thought him innocent.
While (n.) That which requires time; labor; pains.
While (v. t.) To cause to pass away pleasantly or without irksomeness or disgust; to spend or pass; -- usually followed by away.
While (v. i.) To loiter.
While (conj.) During the time that; as long as; whilst; at the same time that; as, while I write, you sleep.
While (conj.) Hence, under which circumstances; in which case; though; whereas.
While (prep.) Until; till.