upa-plava m. affliction, visitation, invasion, inundation

• any public calamity, unlucky accident, misfortune, disturbance

• a portent or natural phenomenon (as an eclipse &c.) MBh. Suśr. Vikr. Kum. Kathās. &c

• N. of Rāhu (who is supposed to cause eclipses) L

• N. of Śiva L