As an adjective sonic
is of or relating to sound.
As a proper noun knuckles is
(archaic) a nickname for a man employed for his fistfighting skill.
sonic
English
Adjective
(head)
of or relating to sound
having a speed approaching that of the speed of sound in air
See also
* hypersonic
* subsonic
* supersonic
* transonic
* ultrasonic
Anagrams
*
*
*
*
knuckles
English
Noun
(head)
Verb
(head)
(knuckle)