The Collaborative International Dictionary of English v.0.48:

Neckwear \Neck"wear`\, n.
   A collective term for cravats, collars, etc. [Colloq. or
   trade name]
   [1913 Webster]

WordNet (r) 3.0 (2006):

neckwear
    n 1: articles of clothing worn about the neck

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "neckwear":
   Roman collar, band, bandanna, bertha, boa, bowtie,
   button-down collar, celluloid collar, choke, choker,
   clerical collar, collar, comforter, cravat, dog collar,
   four-in-hand, fur, guimpe, kerchief, muffler, neckband, neckcloth,
   neckerchief, neckpiece, necktie, plunging neckline, ruff, scarf,
   stock, stole, tallith, tie, tippet, tucker