The Collaborative International Dictionary of English v.0.48:

Stray \Stray\, v. i. [imp. & p. p. Strayed; p. pr. & vb. n.
   Straying.] [OF. estraier, estraer, to stray, or as adj.,
   stray, fr. (assumed) L. stratarius roving the streets, fr. L.
   strata (sc. via) a paved road. See Street, and Stray, a.]
   1. To wander, as from a direct course; to deviate, or go out
      of the way.
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            Thames among the wanton valleys strays. --Denham.
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   2. To wander from company, or from the proper limits; to rove
      at large; to roam; to go astray.
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            Now, until the break of day,
            Through this house each fairy stray.  --Shak.
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            A sheep doth very often stray.        --Shak.
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   3. Figuratively, to wander from the path of duty or
      rectitude; to err.
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            We have erred and strayed from thy ways. --??? of
                                                  Com. Prayer.
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            While meaner things, whom instinct leads,
            Are rarely known to stray.            --Cowper.
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   Syn: To deviate; err; swerve; rove; roam; wander.
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