sweet potato

definition: egg-shaped terra cotta wind instrument with a mouthpiece and finger holes
example:
speech part: noun
synonyms: ocarina
definition: the edible tuberous root of the sweet potato vine which is grown widely in warm regions of the United States
example:
speech part: noun
synonyms:
definition: pantropical vine widely cultivated in several varieties for its large sweet tuberous root with orange flesh
example:
speech part: noun
synonyms: sweet potato vine

How sweet potato is being used?