cen·ter·fold 
(sĕntər-fōld′)
(sĕntər-fōld′)n.
1. A magazine center spread, especially a foldout of an oversize photograph or feature.
2.
a. The subject of a photograph used as a centerfold, often a nude model.
b. A feature, such as an advertisement or calendar, inserted as a centerfold.