If Baby Lightens Up Your World, Then Choose A Name To Match! Sinag Is A Gender-neutral Name Of Filipino Origin. Derived From The Tagalog Word sinkat, This Brilliant Name Has An Equally Dazzling Meaning: “ray Of Light.” With A Name Like This, Your Beaming Bundle Of Joy Is Sure To Be A Bright Spark In Every Room And Share Their Solar Power With Everyone They Meet. Sin, Sina, And Aggie Are All Shining Nickname Choices Too.