The excess mucus production that triggers postnasal drip has a number of possible causes, including: 1  Colds. 2  Flu. 3  Allergies (called allergic postnasal drip). 4  Sinus infection or sinusitis (inflammation of the sinuses). 5  Object stuck in the nose (more common in children).
1. classical music-traditional genre of music conforming to an established form and appealing to critical interest and developed musical taste. classical, serious music. chamber music-serious music performed by a small group of musicians.
Definition of classical. 1  1 : standard, classic. 2  2a : of or relating to the ancient Greek and Roman world and especially to its literature, art, architecture, or ideals classical civilizationb : versed in the classics a classical scholar.