The Collaborative International Dictionary of English v.0.48:

Fret \Fret\ (fr[e^]t), v. t. [imp. & p. p. Fretted; p. pr. &
   vb. n. Fretting.] [OE. freten to eat, consume; AS. fretan,
   for foretan; pref. for- + etan to eat; akin to D. vreten,
   OHG. frezzan, G. fressen, Sw. fr[aum]ta, Goth. fra-itan. See
   For, and Eat, v. t.]
   1. To devour. [Obs.]
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            The sow frete the child right in the cradle.
                                                  --Chaucer.
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   2. To rub; to wear away by friction; to chafe; to gall;
      hence, to eat away; to gnaw; as, to fret cloth; to fret a
      piece of gold or other metal; a worm frets the plants of a
      ship.
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            With many a curve my banks I fret.    --Tennyson.
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   3. To impair; to wear away; to diminish.
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            By starts
            His fretted fortunes give him hope and fear. --Shak.
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   4. To make rough, agitate, or disturb; to cause to ripple;
      as, to fret the surface of water.
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   5. To tease; to irritate; to vex.
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            Fret not thyself because of evil doers. --Ps.
                                                  xxxvii. 1.
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The Collaborative International Dictionary of English v.0.48:

Fretted \Fret"ted\, p. p. & a. [From 2d Fret.]
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   1. Rubbed or worn away; chafed.
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   2. Agitated; vexed; worried.
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The Collaborative International Dictionary of English v.0.48:

Fretted \Fret"ted\, p. p. & a. [See 5th Fret.]
   1. Ornamented with fretwork; furnished with frets;
      variegated; made rough on the surface.
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   2. (Her.) Interlaced one with another; -- said of charges and
      ordinaries.
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WordNet (r) 3.0 (2006):

fretted
    adj 1: having frets [ant: unfretted]
    2: having a pattern of fretwork or latticework [syn: fretted,
       interlaced, latticed, latticelike]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "fretted":
   beset, braided, dogged, enlaced, entwined, handwoven, harassed,
   harried, haunted, hounded, interknit, interlaced, interthreaded,
   intertied, intertissued, intertwined, interwoven, knit, laced,
   loomed, persecuted, plagued, plaited, platted, pleached, raddled,
   textile, tormented, twined, vexed, worried, worried sick,
   worried stiff, woven, wreathed