external body part - any body part visible externally

articulator - a movable speech organ

mouth - the externally visible part of the oral cavity on the face and the system of organs surrounding the opening; "she wiped lipstick from her mouth"

arteria labialis, labial artery - a branch of the facial artery that supplies the lips of the mouth

labial vein, vena labialis - a vein draining the lips of the mouth

labium - any of the four lip-shaped folds of the female vulva

impertinence, impudence, cheek - an impudent statement

comeback, rejoinder, retort, riposte, replication, counter, return - a quick reply to a question or remark (especially a witty or critical one); "it brought a sharp rejoinder from the teacher"

edge - a sharp side formed by the intersection of two surfaces of an object; "he rounded the edges of the box"

vessel - an object used as a container (especially for liquids)