The edge of something sharp such as a knife or an axe is its sharp or narrow side.
刃 I sat down at the water's edge.
If someone or something edges somewhere, they move very slowly in that direction.
慢慢移动He edged closer to the telephone, ready to grab it. 他慢慢地移近电话,准备抓起它。
Be careful—it has a sharp edge.
小心点—这刀刃很锋利。