| 2022-10-16 | See 116-Across |
| 2021-11-22 | Where inhaled air goes |
| 2021-06-05 | Pulmonologist's study |
| 2020-03-04 | It's breath-taking |
| 2019-03-17 | Iron ___ |
| 2018-12-09 | Breather |
| 2016-03-15 | Inspiring part of the body? |
| 2015-11-09 | See 52-Down |
| 2014-06-25 | Breather |
| 2013-09-04 | Breathing space? |
| 2013-05-25 | One housed in a chest |
| 2011-05-02 | Where inhaled air goes |
| 2010-12-22 | Alveoli site |
| 2010-11-07 | Air bag? |
| 2010-10-13 | One getting an inspiration? |
| 2009-10-11 | Breather |
| 2009-07-13 | Aqua-___ |
| 2009-03-16 | Where inhaled air goes |
| 2008-05-20 | Pulmonary organ |
| 2007-11-02 | It's found in a chest |
| 2006-02-08 | Chest part |
| 2001-12-21 | Air bag? |
| 2001-11-26 | Place for a breath of fresh air? |
| 2000-05-06 | Air bag? |
| 1999-12-29 | What "pneumo-" means |
| 1997-09-02 | It's breath-taking |
| 1997-07-21 | Chest organ |
| 1997-04-30 | The "pneumo" in pneumonia |
| 1995-10-08 | Item in a chest |
| 1994-01-12 | Bronchiole locale |