A musical summons to war (poet.). Also fig.

1

1805.  Scott, Last Minstrel, III. xxvi. The Warder … blew his war-note loud and long.

2

1816.  Byron, Ch. Har., III. xxvi. Wild and high the ‘Cameron’s gathering’ rose, The war-note of Lochiel.

3

1897.  Edin. Rev., Oct., 399. The old war-note of strife for strife’s sake has lost something, if not all, of its relentless and brutal barbarities.

4