This is the 14567th most frequent German word.
liegend
"Liegend" means "lying" or "in a horizontal position."
Here, 'liegend' is used as a participle to describe the position of the book.
Das Buch liegt liegend auf dem Tisch.
The book is lying on the table.
In this sentence, 'liegend' is used to describe the dog's action of lying down in the shade.
Ich sah den Hund liegend im Schatten.
I saw the dog lying in the shade.
Here, 'liegend' functions as an adjective describing the statue's position.