From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): (n.) The tie or obligation, implied or expressed, which a subject owes to his sovereign or government; the duty of fidelity to one's king, government, or state.

(2): (n.) Devotion; loyalty; as, allegiance to science.

International Standard Bible Encyclopedia [2]

a lē´jans משׁמרת mishmereth shāmar  1 Chronicles 12:29