yo

interj. hey! (call to catch someone's attention)

Yo is an American English slang interjection. It was highly popularized after being commonly used among Italian Americans and African Americans in Philadelphia, Pennsylvania.
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This article is about the Finnish band. For the English slang greeting, see yo. Yö ("Night") is a Finnish rock band, established in 1981. The only member of the band from the original lineup that is still with the band is Olli Lindholm. Although usually thought of as a band from Pori, nowadays they're more or less based in Tampere.
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pron. I, first person pronoun used to designate one's self

n. self

[African] The primeval world-spirit, a non-animal trickster, of the West African Bamara and the Dahomean Negroes. He consists of the male elements fire and air, as well as the female elements water and earth. It was Yo who let the creator-god Pemba descend to earth. It is somewhat difficult to determine the precise psychical characteristics of Yo, but there is no question of his personality, which is marked by gross appetite and unreliability in his relations with those with whom he comes into contact.

Yo (Japanese) The male ethereal essence or substance of Shinto cosmogony, which in conjunction with In, the female essence, produces manifestation. Equivalent to the Chinese yang.