吞不下、剩下來的那個量
這一支是結果：吞到極限之後，堆在那裡的東西。
noun · C1
An amount of something, especially a product or a crop, that is much more than people need or can use or buy.
過剩／供過於求
核心畫面
Think of swallowing, and then swallowing past the point where there is room. That is what sits under this word: the source traces it to a Latin verb meaning to swallow, the same line as glutton. Fill an appetite until nothing more will go in, and you have the oldest use. Change the mouth into a market and pour goods in until the market cannot take another crate, and you have the verb. What is then left standing there unsold is the noun, a glut. So the word never means simply 'a lot'. It means 'more than can be swallowed'.
可以想成「吞」這個動作，而且吞過了還吞。來源把這個字接到拉丁文的「吞下去」，跟 glutton（貪吃的人）同一條線。…更多收起
可以想成「吞」這個動作，而且吞過了還吞。來源把這個字接到拉丁文的「吞下去」，跟 glutton（貪吃的人）同一條線。把胃口填到再也裝不下，是最早的用法。把嘴巴換成市場，貨一直倒進去，倒到市場再也吃不下一箱，就是那個動詞。剩下那一堆賣不掉的量，就是名詞 a glut。所以這個字的重點從來不是「多」，而是「超過吞得下的限度」。From the word’s history
The source derives the word from Latin gluttire, to swallow, by way of Old French, and compares French glouton, a glutton. The swallowing is therefore the picture, not a guess.
來源說這個字經由古法文來自拉丁文 gluttiō / gluttīre（吞下去），並且拿法文 glouton（貪吃的人）作對照。所以「吞」這個畫面是來源給的，不是後來補上去的聯想。
Wiktionary via kaikki (source_ref kaikki:3f6f69a190036ae4:403715881:21738): "Inherited from Middle English glotien/glotten, probably derived from Old French gloter … derived from Latin gluttiō, gluttīre ('to swallow'). Compare French glouton ('glutton')."
Two branches
一直塞，塞到再也裝不下
這一支是動作本身：把東西倒進去，倒到超過能容納的量。
verb · C1
To put so much of something into a place, especially a market, that there is far more than is wanted or can be sold.
使…供過於求