| Rating | Solver | Clue |
|---|---|---|
| LUNG | Respiratory organ | |
| GILL | Aquatic respiratory organ | |
| BRANCHIA | A gill; a respiratory organ for breathing the air contained in water, such as many aquatic and semiaquatic animals have. | |
| INHIBITION | ...on; a restraining of the function of an organ, or an agent, as a digestive fluid or ferment, etc.; as, the inhibition of the respiratory center ... |