Proboscis

A syrphid fly using its proboscis to reach the nectar of a flower

A proboscis (/prˈbɒsɪs, -kɪs/) is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elongated nose or snout.