Natatoria [noun]

Definition of Natatoria:

collection of liquid

She shivered a little, though it was warm in the natatorium.

Then when she was quite strong, she had gone to the natatorium.

Nearest them was a two-story structure of light-colored stone which Inspector Burton pointed out as the Natatorium.

Here in this gem of a natatorium one can swim in water above blood heat, five feet deep and twenty-five from rim to rim.

You're a champion swimmer–go to some natatorium and give swimming lessons.

There was a high chute beside the natatorium, and a staircase for the bathers to climb to the top "to shoot the chutes."