Answer:

bistre

Answer	Crossword Clue
BISTRE	Dark brown color.
BISTRE	Dark-brown color.
BISTRE	Tawny or swarthy: French.

BISTRE	Dark brown: Fr.
BISTRE	Swarthy, in Savoie
BISTRE	Dark-brown color

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.