A special zone at the edge of the metro platform that passengers are not allowed to enter, except when the vehicle stands still and is available for getting in or out.

plural of edge effect

(ecology) A change in population or community structures that occurs at the boundary of two or more habitats.

(cosmetics) A hair product formulated to hold down baby or fine hair.

The edge of a new knife. A new knife is not necessarily polished to its full potential or to the customer's liking.

(idiomatic) A very remote place.

(idiomatic) A very remote place.

simple past tense and past participle of feather edge

Used other than figuratively or idiomatically: see double-edged, sword. / (figuratively) A benefit that is also a liability, or (a benefit) that carries some significant but not-so-obvious cost or risk.

(idiomatic) In need of refinement; unsophisticated.