jr.

from WordNet (r) 3.0 (2006)

jr.
    adj 1: used of the younger of two persons of the same name
           especially used to distinguish a son from his father;
           "John Junior"; "John Smith, Jr." [syn: {younger}, {jr.}]

from The Collaborative International Dictionary of English v.0.48

Jnr \Jnr.\ n.
   Abbreviation for Junior, used after a name by a son who has
   the same first and last name as his father; -- less commonly
   used than {Jr.}

   Syn: Junior, Jr.
        [WordNet 1.5]

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