When This Is Full, Find a Bathroom Quickly

This page is the CodyCross answer for the clue below from Transport, Group 120, Puzzle 5 (Human Powered Transport).

Question

When This Is Full, Find a Bathroom Quickly

Answer

BLADDER

Word Meaning:

BLADDER — (zoology) A flexible sac that can expand and contract and that holds liquids or gases.

Definitions from Wiktionary.