Lockjaw
/ˈlɑːkdʒɔː/
Definition 1 of 1
Pro Tip 1/3Medical Condition
Lockjaw refers to a specific health issue, not just any kind of jaw pain or stiffness. 
After stepping on a rusty nail, she feared she might develop lockjaw.
Pro Tip 2/3Serious Implication
Using 'lockjaw' implies a severe medical problem that usually requires immediate attention. 
When he couldn't open his mouth in the morning, they rushed to the hospital suspecting lockjaw.
Pro Tip 3/3Not Informal
Lockjaw is a formal medical term, so it is appropriate in medical or serious discussions. 
The doctor's report confirmed lockjaw, recommending immediate treatment.
Compare with
Tetanus
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