Eyelash is a part of the human body that is found on the upper and lower eyelids. It is made up of two parts: CILIUM (6 letters) and LASH (4 letters). CILIUM is the scientific name for the eyelash and it is a single hair-like structure that grows from the eyelid. LASH is the common name for the eyelash and it is a cluster of hairs that grow from the eyelid. Eyelashes serve an important purpose in protecting the eyes from dust, dirt, and other foreign particles. They also help to keep the eyes moist and provide a frame for the eyes.