wow
Concise Oxford English Dictionary © 2008 Oxford University Press:
wow1 informal
▶exclamation (also wowee) expressing astonishment or admiration. ▶noun a sensational success. ▶verb impress and excite greatly.
– origin C16: natural exclamation; first recorded in Scots.
Concise Oxford English Dictionary © 2008 Oxford University Press:
wow2
▶noun Electronics slow pitch fluctuation in sound reproduction, perceptible in long notes. Compare with flutter (in sense 3).
– origin 1930s: imitative.
'wow' also found in these Oxford entries:

