Seis

The seis is a type of Puerto Rican dance music, related to décima. It originated in the later half of the 17th century in the southern part of Spain. The word means six, which may have come from the custom of having six couples perform the dance, though many more couples eventually became quite common. Men and women form separate lines down the h...
Found on http://en.wikipedia.org/wiki/Seis

SEIS

Sociedad Española de Informática de la Salud
Found on http://www.encyclo.co.uk/local/20895

Seis

Song and dance form popular amongst the jíbaros of Puerto Rico, performed in groups of six couples (hence the name). Contains much of the traditional influences of Spain during the colonial period.
Found on http://www.salsa-merengue.co.uk/4bohemians/expanded_glossary.html
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