Answer:

sundial

Answer	Crossword Clue
SUNDIAL	Early timekeeper
SUNDIAL	Wristwatch predecessor
SUNDIAL	Day timer?

SUNDIAL	Old timer
SUNDIAL	Old timer?
SUNDIAL	Item with a gnomon
SUNDIAL	Time-teller at Princeton U.
SUNDIAL	The common lupine.
SUNDIAL	Outdoor timer.
SUNDIAL	Non-windable timepiece.
SUNDIAL	Horologe.

SUNDIAL	One way to tell time.
SUNDIAL	Time teller.
SUNDIAL	One-time timepiece.
SUNDIAL	Time-Teller.
SUNDIAL	Garden adornment.
SUNDIAL	Garden clock
SUNDIAL	Timepiece of a sort
SUNDIAL	Clock's ancestor

SUNDIAL	Garden fixture
SUNDIAL	Outdoor timer

Crossword

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