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pil·lar 'pil-ər n a body part likened to a pillar or column (as the margin of the external inguinal ring) specif PILLAR OF THE FAUCES
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n.
(in anatomy) an elongated apparently supportive structure. For example, the pillars of the fauces are folds of mucous membrane on either side of the opening from the mouth to the pharynx.
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pil·lar (pilґər) [L. pila] a supporting column, usually occurring in pairs.Medical dictionary. 2011.