1) Portuguese boy name 
[Guinea-Bissau] Caio is a Sector in the Cacheu Region of Guinea-Bissau. ...[moth] Caio is a genus of moths in the Saturniidae family. ...
Caio is an Italian name for boys. The meaning is `rejoice, happiness` The name Caio is most commonly given to English and Welsh boys. (6 times more often than to American boys.) Use for the other sex: Gaia What do they use in other countries? Kai (NAMES_Wels) Gaelle Kay (NAMES_Wels_myth) Gail (English) Cai (Chinese) Kaye (English) Kye (English) Gay...