A perennial woody plant having a main trunk and usually a distinct crown, Something that resembles a tree in form, especially a diagram or arrangement that has branches showing relationships of hierarchy or lineage, A wooden beam, post, stake, or bar used as part of a framework or structure, transitive verb_ To drive to a tree; to cause to ascend a tree, Informal To force into a difficult position; corner, To force up a tree

A gap between a main and auxiliary airfoil to provide space for airflow and facilitate the smooth passage of air over the wing, A position of employment in an organization or hierarchy, Computers An expansion slot, verb_ To assign something or someone into a slot (gap in a schedule or sequence), To put something (such as a coin) into a slot (narrow aperture), To put something where it belongs, transitive verb_ To cut or make a slot or slots in, To put into or assign to a slot, Obs. or Prov. Eng. To shut with violence; to slam

Categorization or arrangement of a group of people or things into such ranks or grades, A group of animals in which certain members or subgroups dominate or submit to others, Any group of objects ranked so that every one but the topmost is subordinate to a specified one above it

An often portable structure consisting of two long sides crossed by parallel rungs, used to climb up and down, Something that resembles this device, especially a run in a stocking, A means of moving higher or lower, as in a hierarchy, A series of ranked stages or levels