| Alveolus in a lung, e.g. |
The Telegraph Cross Atlantic |
30 Sep 2025 |
| Head on couch after shows, a bit of a breather? (3,3) |
The Guardian Cryptic |
10 Sep 2025 |
| Lung cavity |
Premier Sunday |
16 Mar 2025 |
| Respiratory space |
Newsday |
30 Nov 2024 |
| Playing ocarinas, losing no alveolus? (3,3) |
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| Part of a bird's breathing system — is a car (anag) |
The Guardian Quick |
26 Sep 2023 |
| Lung compartment |
Universal |
24 Feb 2023 |
| Respiratory cavity |
LA Times Daily |
05 Jun 2022 |
| Respiratory cavity |
The Washington Post |
05 Jun 2022 |
| Alveolus |
Wall Street Journal |
23 Mar 2022 |
| Respiratory cavity |
The Washington Post |
04 Oct 2021 |
| Respiratory cavity |
LA Times Daily |
04 Oct 2021 |
| Lung cell |
Premier Sunday |
17 Jan 2021 |
| Lung compartment |
The New Yorker |
18 Nov 2019 |
| Lung structure |
Universal |
01 Sep 2019 |
| Lung structure |
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| Cavity in a lung |
Newsday |
19 Oct 2018 |
| Hollow part of a bird |
Universal |
08 May 2018 |
| Hollow part of a bird |
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| Part of a lung |
The Times Concise |
05 May 2017 |
| Respiratory cavity |
LA Times Daily |
08 Feb 2017 |
| Respiratory cavity |
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| Lung compartment |
Wall Street Journal |
14 May 2016 |
| Lung compartment |
The Times Concise |
18 Mar 2016 |
| Hollow part of a bird |
USA Today |
28 Apr 2015 |
| Lung compartment |
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| Hollow part of a bird |
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| Lung compartment |
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| Part of the lung |
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| Lung compartment |
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| Bird's temperature regulator aid |
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| Respiratory cavity |
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| Part of the lung |
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| Alveolus |
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| Alveolus |
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| Lung feature |
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| Alveolus |
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| Alveolus |
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| Lung compartment |
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| Alveolus |
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| Bird's buoyancy aid |
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| Bird's body feature |
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| Bird's organ |
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| Lung cell |
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| Avian lung outgrowth |
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| Canary's cavity |
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| Bird's breathing apparatus |
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| Bird's breathing aid |
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| Part of the lung |
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| Pulmonary alveolus |
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| Hollow space in birds |
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