把食物遞出去的那一端
這一組最貼近字面：真的有食物，也真的有人或東西在餵。其他意思大多是把這個畫面裡的「食物」換成別的東西。
noun · B1
A container that holds food for birds or animals, so they can come and eat from it. You fill it, put it in place, and fill it again when the food runs out.
餵食器
核心畫面
One way to hold feeder in your head: it is the thing standing in the middle of a supply. On one side there is a store of something — seeds, paper, water, electricity, passengers. On the other side there is someone or something that needs it. The feeder is what keeps passing it across, a little at a time, so the far side never runs dry. A bird feeder passes out seeds all day while you are at work; a paper feeder passes sheets into a printer; a small river passes water into a big one. Because the English verb feed points both ways — you feed a child, and cattle feed on grass — the same word can now and then name the eating end instead.
「feeder」可以想成「站在供應中間、一直遞東西過去的那一個」。一邊是存量：種子、紙、水、電、乘客。另一邊是需要它…更多收起
「feeder」可以想成「站在供應中間、一直遞東西過去的那一個」。一邊是存量：種子、紙、水、電、乘客。另一邊是需要它的人、動物或機器。feeder 就是把東西一點一點遞過去、讓另一邊不會斷掉的角色。掛在樹上的餵鳥器整天都在遞種子。印表機的進紙器一張一張遞紙。小支流一路把水遞給大河。因為英文的 feed 本身有兩個方向——你可以餵小孩，牛也可以 feed on grass——所以這個字偶爾會反過來，指「吃的那一端」。From the word’s history
Wiktionary analyses feeder as Middle English feedere, that is feed plus the ending -er, giving 'the one that feeds'. Every modern use is still that phrase, with a different thing standing in the -er slot.
Wiktionary 把 feeder 分析成中古英語 feedere，也就是 feed 加上 -er，字面是「負責餵的那一個」。今天所有的用法都還是這句話，只是站在 -er 位置上的東西換過而已。
Wiktionary entry for feeder (packet source_ref kaikki:3f6f69a190036ae4:1021881410:19033): From Middle English feedere, federe, fedare, equivalent to feed + -er.
Five branches
吃的那一端
這一組是整個字裡唯一反方向的。要靠前面的字判斷是哪一邊，例如 bottom feeder 一看就知道是在吃。
noun · B2
An animal or person described by the way they eat — where they eat, when they eat, or how much. It almost always has a word in front of it, as in bottom feeder, night feeder, or slow feeder.
以某種方式進食者
把料送進去的管線和機器
把餵鳥器裡的食物換成紙、水、電、原料，畫面完全不用改：小的那一頭一直送，大的那一頭才動得起來。
noun · B2
The part of a machine that puts paper, thread, material or other supplies into it, a little at a time, so the machine can keep working.
進料裝置；進紙器
把人和貨送進主幹的路線
這次被送的是人。大站到不了小地方，所以要有小路線把人一批一批帶過來，再換車繼續走。
noun · C1
A small road, train line, bus route or air service whose job is to carry people or goods to a bigger one, instead of taking them the whole way.
接駁路線
遊戲裡的說法
一樣是「一直送東西給另一邊」，只是送的是好處，而且送給的是敵人。
noun · C1
In team video games, a player whose character keeps being killed by the other team, so the other team gets stronger. It is used as an insult, whether the player is doing it on purpose or is simply new to the game.
送頭的玩家