The Vietnamese word "ê răng" is a verb that describes a sensation of discomfort or irritation in the teeth, often translated to "to feel one's teeth on edge" in English. This feeling can be caused by various factors, such as eating something sour, cold, or hard, or even due to anxiety or stress.
In more advanced contexts, "ê răng" can be used to express a reaction to certain sounds or situations that cause discomfort. For example, if you hear nails scratching on a chalkboard, you might say it makes you feel "ê răng."