'Headshake' definitions:
Definition of 'headshake'
(from WordNet)
noun
The act of turning your head left and right to signify denial or disbelief or bemusement; "I could tell from their headshakes that they didn't believe me" [syn: headshake, headshaking]
Definition of 'Headshake'
From: GCIDE
- Headshake \Head`shake`\ (-sh[=a]k`), n. A significant shake of the head, commonly as a signal of denial. --Shak. [1913 Webster]