Definify.com
Webster 1913 Edition
Humming
Hum′ming
,Adj.
 Emitting a murmuring sound; droning; murmuring; buzzing. 
 Hum′ming
,Noun.
 A sound like that made by bees; a low, murmuring sound; a hum. 
Hummingale
, lively or strong ale. 
Dryden. 
– Humming-bird moth 
(Zool.)
, a hawk moth. See 
 Hawk moth
, under Hawk
, the bird.Webster 1828 Edition
Humming
HUM'MING
,ppr.
  HUM'MING
,Noun.
  Definition 2025
humming
humming
English
Verb
humming
- present participle of hum
 
Noun
humming (plural hummings)
-  The sound of something that hums; a hum.
-  1969, New York Magazine (volume 2, number 49, 8 December 1969, page 70)
- There are some contemporary additions to these scattered fragments from Shakespeare. Mostly they are songs; sometimes they are various screechings and hummings […]
 
 
 -  1969, New York Magazine (volume 2, number 49, 8 December 1969, page 70)