lockjaw
/ˈlɔkˌdʒɔʊ/ LOK-jaw
Definitions
1. noun
a spasmodic contraction of the muscles of the jaw, typically resulting from a tetanus infection, which prevents the jaw from opening
“The patient was diagnosed with lockjaw and required immediate medical attention.”
2. verb
to contract or become rigid, especially the jaw, as a result of tetanus or other medical conditions
“The patient’s face began to lockjaw, signaling the onset of tetanus symptoms.”