Meaning

adjective steadfast in allegiance or duty

adjective inspired by love for your country

adjective unwavering in devotion to friend or vow or cause; ; ; - Campaign song for William Henry Harrison

originBorrowed from Middle French loyal, from Old French loial, leial, leal, from Latin lēgālis. Doublet of legal and leal.

Etymology from Wiktionary, CC BY-SA 3.0