咧liě

 （嘴角向两边伸展） draw back the corners of the mouth; grin: 把嘴一 ～ open one's mouth slyly and barely; 他 ～ 着嘴笑。 His face broadened into a grin.
另见 see also liē; lie。
◆咧开嘴笑 One's mouth widened in a smile.;grin from ear to ear;One's face broadened (out) into a grin.；
咧嘴 grin；
咧嘴傻笑 grin like a Cheshire cat