Cal ‧ der, Al ‧ ex ‧ an ‧ der /ˈkɔːldəʳ, ˌælɪɡˈzɑːndəʳ $ -ˈzæn-/ BrE AmE
(1898–1976) a US ↑ sculptor best known for his large outdoor works of art found in many cities, and for his large ↑ mobile s (=decorations made of objects tied to wires or string which move when air blows around them)