From Greek 'sykomoros' (fig-mulberry), the name wandered from an Egyptian fig tree to unrelated maples and planes.
A large deciduous tree; in North America, a plane tree (Platanus), and in Britain, a maple (Acer pseudoplatanus).
From Old French 'sicomore,' from Latin 'sycomorus,' from Greek 'sykomoros,' from 'sykon' (fig) + 'moron' (mulberry). Originally the fig-mulberry tree of Egypt (Ficus sycomorus); the name transferred to unrelated European and American trees by resemblance. Key roots: sykon (Greek: "fig"), moron (Greek: "mulberry").
The biblical sycamore that Zacchaeus climbed in Jericho (Luke 19:4) was Ficus sycomorus, the Egyptian fig—a completely different tree from any modern tree called sycamore.