(Internet) A microblog, especially one on the Tumblr microblogging service.

A tumor of the pulmonary apex.

A swelling, especially of the abdomen, due to muscular spasm, accumulation of flatus, etc., simulating an actual tumour in appearance, but disappearing upon the administration of an anaesthetic.

(nautical) To incline inward, as the sides of a vessel, above the bends or extreme breadth.

A particular steroid glycoside.

A particular steroid glycoside.

nephroblastoma

(informal) a person's navel

plural of tummy button

A benign cystic tumor of the salivary glands containing abundant lymphocytes and germinal centers.