Declension of the noun "Latin"

Salve. What is the declension of the noun “Latin” and what is it’s complete declension? I need to how how to decline this word. I cannot find the complete decelension online. thank you for any help.

Latinum = Lingua latina
Neutrius generis est latinum nomen seu substantivum et declinationis secundae.

Latinum is a 2nd declension neuter noun or substantive, for the latin language
Latinum -um -i -o -o

You have lingua latina or latina, with lingua implicitly understood, so also, then,
latina -am -ae -ae â as a first declension.
Est etiam lingua latina seu latina (lingua subauditur), ut nomen declinationis primae.[/i]