咥える
くわえる · kuwaeru · JLPT N3 · verb-ichidan
to hold something in the mouth
🐕🦴 咥 = 口 mouth + 至 arrive: the thing has arrived at the mouth
The left part 口 is mouth; the right part 至 means to reach or arrive. Together: something has reached the mouth and stays there. That is kuwaeru, holding something in the mouth, like a dog with a bone or someone with a pipe.