Answer:

roble

Answer	Crossword Clue
ROBLE	Californian oak
ROBLE	California oak
ROBLE	California white oak

ROBLE	White oak
ROBLE	California white oak.
ROBLE	California oak.
ROBLE	White oak.
ROBLE	Calif. white oak
ROBLE	Calif. oak
ROBLE	California oak tree
ROBLE	Oak tree

ROBLE	Variety of oak
ROBLE	White oak of California
ROBLE	White oak tree

Crossword

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