The Collaborative International Dictionary of English v.0.48:

Intertwine \In`ter*twine"\, n.
   The act of intertwining, or the state of being intertwined.
   --Coleridge.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Intertwine \In`ter*twine"\, v. t.
   To unite by twining one with another; to entangle; to
   interlace. --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Intertwine \In`ter*twine"\, v. i.
   To be twined or twisted together; to become mutually involved
   or enfolded.
   [1913 Webster]

WordNet (r) 3.0 (2006):

intertwine
    v 1: spin,wind, or twist together; "intertwine the ribbons";
         "Twine the threads into a rope"; "intertwined hearts" [syn:
         intertwine, twine, entwine, enlace, interlace,
         lace] [ant: untwine]
    2: make lacework by knotting or looping [syn: tat,
       intertwine]
    3: make a loop in; "loop a rope" [syn: loop, intertwine]