choke
Definitions
To have difficulty breathing because of a constricted or obstructed throat.
To fail to perform effectively due to nervousness or pressure.
To restrict or prevent the flow of air or liquid through a passage.
Examples
He started to choke on a piece of popcorn during the movie.
The heavy traffic began to choke the city streets during rush hour.
She was afraid she would choke under the pressure of the final exam.