The Collaborative International Dictionary of English v.0.48:

Mucocele \Mu"co*cele\, n. [Mucus + Gr. kh`lh tumor.] (Med.)
   An enlargement or protrusion of the mucous membrane of the
   lachrymal passages, or dropsy of the lachrymal sac, dependent
   upon catarrhal inflammation of the latter. --Dunglison.
   [1913 Webster]