Medical Term
yawning
a REFLEX ACTION when the mouth is opened wide and air is drawn into the lungs and slowly released. It is usually, although not exclusively, associated with tiredness or boredom.
Source: mediLexicon corpus · slug
yawninga REFLEX ACTION when the mouth is opened wide and air is drawn into the lungs and slowly released. It is usually, although not exclusively, associated with tiredness or boredom.
yawning