Answer:

sunken

Answer	Crossword Clue
SUNKEN	Like many a galleon
SUNKEN	Like some treasure
SUNKEN	Like the Titanic

SUNKEN	Submerged
SUNKEN	Hollow, as eyes
SUNKEN	Kind of garden.
SUNKEN	Hollow
SUNKEN	Hollow; recessed
SUNKEN	Like some living rooms
SUNKEN	Like some treasures

Crossword

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