(graph theory) An edge of a directed graph.

(snowboarding) The sharp edge on the long side of a snowboard closest to one's toes, regardless of which way one if facing (up-mountain or down-mountain) or riding (goofy or regular).

The front edge of something. / The edge of a book, leaf, or illustration furthest from the backbone.

(of an edged weapon etc) having two cutting edges / (by extension) having two, often contrasting, meanings or interpretations

Representing the forefront, or position of greatest advancement in some field.

(of pages of a book etc) Having gilded edges. / (finance, of securities) Issued by the Bank of England. / Of the highest quality.

Of or pertaining to the leading edge of an airfoil / (by extension) leading, latest or most up-to-date

(aeronautics) The frontmost edge of a wing or other airfoil of an aircraft; sometimes contains slots or slats / (by extension) The foremost part of a trend etc; a vanguard

(aeronautics) The rearmost edge of a wing or other airfoil.

(not comparable) Of a blade, such as a sword or knife, sharp on both edges. / (comparable, figuratively) As dangerous for the user as the one it is used on.