proboscis

noun (plural proboscises, proboscides /-ˈbäsəˌdēz/, or probosces /-ˈbäsēz/)

• the nose of a mammal, especially when it is long and mobile, such as the trunk of an elephant or the snout of a tapir.
• Entomology (in many insects) an elongated sucking mouthpart that is typically tubular and flexible.
• Zoology (in some worms) an extensible tubular sucking organ.