Final answer:
In philosophy, 'quail' refers to the feeling of fear or anxiety in response to threats or uncertain situations.
Step-by-step explanation:
In philosophy, the word 'quail' is often used to refer to the feeling of fear or anxiety. Philosophers discuss the concept of quail as an emotional response to threats or uncertain situations. For example, when discussing the fight or flight response, philosophers may refer to the feeling of quail as a natural reaction to perceived danger.