whiz (
http://definr.com/whiz)
n 1: someone who is dazzlingly skilled in any field [syn:
ace,
adept,
sensation,
maven,
virtuoso,
genius,
hotshot,
star,
whizz,
wizard,
wiz]
2: a buzzing or hissing sound as of something traveling rapidly
through the air; "he heard the whiz of bullets near his
head"
v : make a soft swishing sound, as of a motor working or wings
flapping [syn:
whizz,
whirr,
whir,
birr,
purr]