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.

A gold-copper alloy used by the pre-Columbian cultures of Central America to make religious objects.

(swimming) A turn used to reverse the direction in which the person is swimming.

plural of tumble turn

simple past tense and past participle of rough and tumble

present participle of rough and tumble