(botany) Ginkgo biloba.

(botany) A much-branched European shrub of large size (Viburnum lantana), with dense cymes of small white flowers, the foliage and young shoots thickly covered with soft mealy down.

(Southern England, especially Hampshire) A squirrel

(graph theory) A tree structure which includes all vertices of a graph.

plural of tree ring

(mathematics, set theory) A tree (T, <) of height ω₁, each of whose levels is at most countable, and has at least ℵ₂ branches.

Alternative form of planetree / (mathematics) An ordered tree, a type of graph, in which the child nodes of each vertex have a definite number assigned.

Ceiba pentandra, a tree of the tropical Americas and west-central Africa, with white flowers, cultivated in south-east Asia for its seed fibre.

Melia azedarach, a deciduous or semi-evergreen tree with poisonous fruit, native to India, Southeast Asia, and northern Australia.

The cross on which Jesus was crucified / A representation of the cross on which Jesus was crucified.