fron·ten·is 
(frŭn-tĕnĭs, frŏntĕn′ĭs)
(frŭn-tĕnĭs, frŏntĕn′ĭs)n.
A Latin-American tennis game played on a three-walled court.
[American Spanish, blend of Spanish frontón, jai alai court; see FRONTON, and Spanish tenis, tennis (from English TENNIS).]