Yes, CRANES is a Scrabble word!

Letter values in Scrabble US: C 3, R 1, A 1, N 1, E 1, S 1.

Is it a valid word?

CRANES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

United States writer (1871-1900)
United States poet (1899-1932)
a small constellation in the southern hemisphere near Phoenix
lifts and moves heavy objects; lifting tackle is suspended from a pivoted boom that rotates around a vertical axis
large long-necked wading bird of marshes and plains in many parts of the world

Also: stephen crane, hart crane, harold hart crane, stretch out.

Not playable in Scrabble US: GRUS.