Real Dictionary

cedar
variable noun: A cedar or a cedar tree is a large evergreen tree with wide branches and small thin leaves called needles.

cedar in American English
any of a genus (Cedrus) of widespreading coniferous trees of the pine family, having clusters of needlelike leaves, cones, and durable wood with a characteristic fragrance, as the cedar of Lebanon (C. libani)
of cedar
noun: any of several Old World, coniferous trees of the genus Cedrus, having wide, spreading branches

cedar in British English
adjective: made of the wood of a cedar tree
noun: any Old World coniferous tree of the genus Cedrus, having spreading branches, needle-like evergreen leaves, and erect barrel-shaped cones: family Pinaceae