Word Study
headshake
WORDNET DICTIONARY
Noun headshake has 1 sense
- headshake(n = noun.act) headshaking - 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" is a kind of motility, motion, move, movement
CIDE DICTIONARY
headshake, n.
A significant shake of the head, commonly as a signal of denial. Shak. [1913 Webster]
For further exploring for "headshake" in Webster Dictionary Online