The Collaborative International Dictionary of English v.0.48:

Pharynx \Phar"ynx\, n.; pl. pharynges. [NL., fr. Gr. fa`rygx,
   fa`ryggos: cf. F. pharynx.] (Anat.)
   The part of the alimentary canal between the cavity of the
   mouth and the esophagus. It has one or two external openings
   through the nose in the higher vertebrates, and lateral
   branchial openings in fishes and some amphibias.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pharynx
    n 1: the passage to the stomach and lungs; in the front part of
         the neck below the chin and above the collarbone [syn:
         throat, pharynx]

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "pharynx":
   alveolar ridge, alveolus, apex, arytenoid cartilages, back, blade,
   dorsum, esophagus, fauces, goozle, gorge, gullet, guzzle, hals,
   hard palate, larynx, lips, nasal cavity, oral cavity, palate,
   pharyngeal cavity, soft palate, speech organ, syrinx, teeth,
   teeth ridge, throat, tip, tongue, velum, vocal chink, vocal cords,
   vocal folds, vocal processes, voice box, weasand, wizen