The foremost part of a trend etc; a vanguard
At the forefront of practice or technology, contrast with bleeding edge
The frontmost edge of a wing or other airfoil of an aircraft; sometimes contains slots or slats
Anything that is characteristic of modernity.
Modern or contemporary ideas, thought, practices, etc.
Any of several styles of art, architecture, literature, philosophy, etc., that flourished in the 20th century.
A religious movement in the early 20th century, condemned as heretical by Pope Pius X, which tried to reconcile Roman Catholic dogma with modern science and philosophy.