For what cause, reason, or purpose; on what account; wherefore; -- used interrogatively. See the Note under What, pron., 1. Turn ye, turn ye from your evil ways; for why will ye die, O house of Israel Ezek. xxxiii. 11.
For which; on account of which; -- used relatively. No ground of enmity between us known Why he should mean me ill or seek to harm. Milton. Turn the discourse; I have a reason why I would not have you speak so tenderly. Dryden.
The reason or cause for which; that on account of which; on what account; as, I know not why he left town so suddenly; -- used as a compound relative.
A young heifer. [Prov. Eng.] Grose.
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