(chiefly Britain) An at-grade crossing between a railway line and an ordinary road, with rails and road at the same level.

relatively unimportant / not intense / (computing) of, or relating to a program, or to code in which each statement corresponds to a single machine instruction / detailed

The nominal height of the surface of the oceans above which heights of geographical features and aircraft flight levels are measured.

(mathematical analysis) The set of values x for which a real-valued function f(x) is equal to a given constant.

(business) An event consisting of level setting / (business) A state of mutual understanding among parties

(business) To establish a baseline of mutual understanding

Taking place or existing at a high level, altitude or elevation. / Of or pertaining to a person of a high social position or high rank within a hierarchy or organization. / Consisting of such people.

(chemistry) The energy level of the electrons (core electrons) occupying the completely filled shells under the valence shell.

(programming) read-eval-print loop

Highest. / Best. / (Internet) Applied to domains at the highest level, such as .uk covering all sites for the United Kingdom.