To produce a low-pitched hum or buzz. / To speak in a monotone way.

A low-pitched hum or buzz. / (music) One of the fixed-pitch pipes on a bagpipe. / (music, uncountable) A genre of music that uses repeated lengthy droning sounds. / A humming or deep murmuring sound.

A period of unusually low rainfall, longer and more severe than a dry spell. / (by extension, informal) A longer than expected term without success, particularly in sport.

(pharmacology) A dose of liquid medicine in the form of a drop (sense 1). / (pharmacology, chiefly in the plural) A liquid medicine that is intended to be administered in drops (sense 1).

(intransitive) Of a liquid: to fall in drops or droplets. / (intransitive, also figuratively) To fall (straight down) under the influence of gravity, like a drop of liquid.

State of being drowsy.

Inclined to drowse; heavy with sleepiness / Causing someone to fall sleep or feel sleepy; lulling; soporific. / Boring. / Dull; stupid.

(intransitive) To die from suffocation while immersed in water or other fluid. / (transitive) To kill by suffocating in water or another liquid.

An impermeable sheet of material meant to catch paint or other hard-to-clean substances.

Waste or impure matter. / Residue that forms on the surface of molten metal from oxidation. / The impurities in metal. / A waste product from working with metal.