The Collaborative International Dictionary of English v.0.48:

Appertain \Ap`per*tain"\, v. i. [imp. & p. p. Appertained; p.
   pr. & vb. n. Appertaining.] [OE. apperteinen, apertenen,
   OF. apartenir, F. appartenir, fr. L. appertinere; ad +
   pertinere to reach to, belong. See Pertain.]
   To belong or pertain, whether by right, nature, appointment,
   or custom; to relate.
   [1913 Webster]

         Things appertaining to this life.        --Hooker.
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         Give it unto him to whom it appertaineth. --Lev. vi. 5.
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WordNet (r) 3.0 (2006):

appertain
    v 1: be a part or attribute of [syn: pertain, appertain]