砂嚢
さ
の
う
Meanings
1
The muscular digestive organ found in birds, reptiles, and some other animals, used for grinding food.
A bird's gizzard serves to grind up the food it eats.
2
A bag filled with sand, used for flood control, weight, or other purposes. Cross-referenced with 砂袋.
See also: 砂袋
We stacked sandbags in front of the house in preparation for the flood.