Laguna /ləˈɡuː.nə/noun 3adjective 1forms 1 noun3 •A province of Calabarzon, Luzon, Philippines. Capital: Santa Cruz. Largest city: Calamba. •A federally recognized tribe of Keres-speaking Pueblo people in Cibola County, New Mexico. •A member of this tribe. adjective1 •Of or pertaining to the Laguna Pueblo people, culture, or the variety of Keres they speak. formsLagunas