Libstd overview docs call slices "references to arrays"

[tomjakubowski]

The common container type, Vec, a growable vector backed by an array, lives in the vec module. References to arrays, &[T], more commonly called "slices", are built-in types for which the slice module defines many methods.

I think that in modern Rust parlance [T] is a slice and &[T] is a "borrowed slice" (hooray DST). Moreover, if [T; n] is an "array" then a borrowed slice may be a reference to some contiguous region that isn't backed by an array. This might seem pedantic but I think it's important to be clear that &[T] may not actually point to an array.

My suggested rewording would be:

Contiguous, unsized regions of memory, [T], commonly called "slices", and their borrowed versions, &[T], commonly called "borrowed slices", are built-in types for which the ...