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A bedpan is a low, wide container that a person uses as a toilet while still lying in bed. Nurses slide it under someone who is too ill, too weak, or too hurt to walk to the bathroom. It is a hospital and care-home word, plain and practical, not rude in that setting — though outside a ward people may feel shy saying it. It is not a pan for cooking, and it is not the same as a child’s potty, which you sit on beside the bed; a bedpan is used in the bed. There is usually a matching bottle for men who only need to pass water, but bedpan is the wider, flatter dish for more than that.
便盆（給起不了床的病人用的）
組成bed + pan (here pan means a shallow pot, the old chamber-pot kind, not a cooking pan).
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
bedpannoun/ˈbɛdˌpæn/
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A pan used for urination and defecation while in bed, now usually for reasons of medical necessity or convenience.
- The nurse emptied the patient's bedpan each morning.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。