A stalk-like structure protruding from the head of certain animals like crustaceans or snails, at the tip of which is an eye.
From 'eye' + 'stalk' (a stem or stalk-like structure). An English compound created in the 17th-18th centuries to describe the mobile eye-bearing appendages of crabs, lobsters, and similar creatures.
Eyestalks are incredibly sophisticated—a crab can move its eyestalks independently to look in different directions without moving its body, which is something your eyes can't do because they're fixed in your skull!
Complete word intelligence in one call. Free tier — 50 lookups/day.