Underneath the skin behind the knee are the following: Popliteal artery, Popliteal vein, Popliteal fossa, Popliteal lymph nodes, Popliteal nerves, and Popliteal pterygium.
Any object small enough to fit into the mouth. The singular version, poplin, can be a noun or a verb. The verb version describes the action of "poplin" the food into your mouth.