[jut samkhan] (n, exp) EN: important point ; crux ; crucial point ; essential point ; keynote ; important part ; crux of the matterFR: point capital [ m ] ; point essentiel [ m ] ; point crucial [ m ] ; point important [ m ]
n. 1. (Mus.) The tonic or first tone of the scale in which a piece or passage is written; the fundamental tone of the chord, to which all the modulations of the piece are referred; -- called also key tone. [ 1913 Webster ]
2. The fundamental fact or idea; that which gives the key; as, the keynote of a policy or a sermon. [ 1913 Webster ]