The Collaborative International Dictionary of English v.0.48:
Jesus \Je"sus\ (j[=e]"z[u^]s), prop. n. [L. Jesus, Gr. ?, from
   Heb. Y[=e]sh[=u]a'; Y[=a]h Jehovah + h[=o]sh[imac]a' to
   help.]
   The Savior; the name of the Son of God as announced by the
   angel to his parents; the personal name of Our Lord, in
   distinction from Christ, his official appellation. --Luke i.
   31.
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         Thou shalt call his name Jesus; for he shall save his
         people from their sins.                  --Matt. i. 21.
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   Note: The form Jesu is often used, esp. in the vocative.
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               Jesu, do thou my soul receive.     --Keble.
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   The Society of Jesus. The Roman Catholic order whose
      members are called Jesuits. See Jesuit.
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