水邊長滿蘆葦
最靠近字面的一支：畫面裡那些桿子是真的長在那裡，不是比喻。
adjective · C1
A reedy place, such as a pond, a river bank or a piece of wet ground, has a lot of reeds growing in it or along its edge.
長滿蘆葦的
核心畫面
Picture one reed: a tall hollow stalk standing in shallow water, narrow enough to bend in the wind, and able to give out a high thin note when air passes through it. Every use of reedy can be held inside that single picture. Where those stalks crowd the water, the place is reedy. When a sound is as thin as the note they make, the sound is reedy. And when a body is as narrow as the stalk itself, the person is reedy.
reedy 可以想成一根蘆葦的樣子。細細長長、中間是空的，立在淺水裡，風一吹就彎。空氣穿過那根空心桿，發出來的音又高…更多收起
reedy 可以想成一根蘆葦的樣子。細細長長、中間是空的，立在淺水裡，風一吹就彎。空氣穿過那根空心桿，發出來的音又高又薄。這個畫面可以一路帶到三個用法。水邊密密麻麻長著這種桿子，那個地方就是 reedy。聲音薄得像那個音，聲音就是 reedy。身形細得像那根桿子，人就是 reedy。From the word’s history
Our Wiktionary evidence records reedy from Middle English reedy, reedi, formed from reed plus the ending -y, which means covered with or like. So the word literally says full of reeds or reed-like, and both of those readings are still working today.
手上的 Wiktionary 資料記錄 reedy 來自中古英語的 reedy、reedi，是 reed（蘆葦）加上字尾 -y（滿是…的、像…的）。所以它字面上就是「滿是蘆葦的」或「像蘆葦的」。今天這兩條讀法都還活著：一條走向地方，一條走向聲音和身形。
Wiktionary via supplied kaikki extract 3f6f69a190036ae4, entry 'reedy' (adj), etymology_text
Two branches
像蘆葦一樣細
這一支借的是蘆葦的形狀和它發出的聲音，蘆葦本身並不在場。
adjective · C1
If a voice or another sound is reedy, it is high and thin, with no deep or full tone under it. A reedy sound is often not pleasant to listen to.
尖細的（聲音）