1. noun /tɑːˈɡɑː.lɑːɡ,təːˈɡɑː.lɑːɡ/
a) A language spoken in the Philippines, in particular, Metro Manila and its surrounding provinces such as Bulacan, Laguna, Cavite, Batangas, Bataan, Rizal, Marinduque, Mindoro, and Quezon.
b) A member of the second largest Filipino ethnic group.
2. adjective /tɑːˈɡɑː.lɑːɡ,təːˈɡɑː.lɑːɡ/
Of or relating to the Tagalogs.
Wikipedia foundation.