drone 2 
(drōn)
(drōn)v. droned, dron·ing, drones
v.intr.
1. To make a continuous low dull humming sound: "Somewhere an electric fan droned without end" (William Styron).
2. To speak in a monotonous tone: The lecturer droned on for hours.
3. To pass or act in a monotonous way.
v.tr.
To utter in a monotonous low tone: "The mosquitoes droned their angry chant" (W. Somerset Maugham).
n.
1. A continuous low humming or buzzing sound.
2. Music
a. Any of the pipes of a bagpipe that lack finger holes and produce a single tone.
b. A long sustained tone.
c. Any of various instruments that produce only a constant pitch.
[From DRONE1 (from the bee's humming sound).]
- witch grass
- witch hazel
- witch-hunt
- witch hunt
- witch-hunter
- witch-hunting
- witching
- witching hour
- witchingly
- witch of Agnesi
- witchy
- wite
- witenagemot
- with
- with a grain of salt
- withal
- with all heart
- with all (one's) heart
- with all one's heart
- with an eye to
- with a vengeance
- with bad grace
- with child
- withdraw
- withdrawable