在別人家或學校吃住的人
這一支的 board 可以想成開飯的那張桌子，也因此延伸成「供應的伙食」。這支的共同點是：住的地方同時也是吃飯的地方。
noun · B2
Someone who pays to live in a room in another person's house, where some or all of their meals are also provided as part of what they pay.
寄宿房客（附伙食）
核心畫面
You can think of a boarder as a person tied to some board. The ending -er just names the , so everything depends on which board is meant. One board is the table where meals are served, which is why board can mean the food a house provides: the person who pays to sleep and eat there is a boarder, and so is the student who lives at school. Another board is the side of a ship, so to board is to get on, and a person getting on a bus or train can be called a boarder. A third board is simply a plank you stand on, so a or is a boarder too. Meeting the word, ask first: is this board a table, a way on, or a plank?
boarder 可以想成「跟某一塊 board 綁在一起的人」，-er 只是指出「做這件事的人」，所以關鍵在於這裡的…更多收起
boarder 可以想成「跟某一塊 board 綁在一起的人」，-er 只是指出「做這件事的人」，所以關鍵在於這裡的 board 是哪一種。一種 board 是開飯的那張桌子，因此 board 也能指一個家提供的伙食：付錢在別人家吃住的人就是 boarder，連晚上都待在學校吃住的學生也是。另一種 board 是船身的側板，跨過它就是上船，所以 board 有「上車、上船」的意思，正在上車的人也被叫 boarder。第三種 board 最直接，就是腳下那塊板子，滑雪、衝浪、玩滑板的人同樣是 boarder。看到這個字，先問一句：這裡的 board 是飯桌、是上車，還是一塊板子？From the word’s history
The evidence packet gives only this: boarder is board + -er. The -er ending names the person who does something, so the word means a person connected with a board; which board is meant is what separates the uses.
手上的資料只給了一行：boarder 由 board 加 -er 組成。-er 指出「做這件事的人」，所以字面就是「跟 board 有關的人」；至於是哪一種 board，資料沒有再說，下面的畫面是教學用的想法，不是歷史來源的斷定。
Wiktionary 'boarder' etymology, supplied verbatim in the evidence packet (kaikki:3f6f69a190036ae4:855360319:24753): 'From board + -er.'
Three branches
正在上車、上船的人
這一支的 board 換成了動詞「上車、上船」，跟伙食那條線沒有關係，靠的是同一個 -er：正在做這個動作的人。
noun · C1
Someone who is getting on, or waiting to get on, a bus, train, plane or ship.
正在上車（船、機）的人
踩板子的人
這一支的 board 就是字面上的一塊板子，跟飯桌、跟上車都無關，是最直接的一條線。
noun · B2
Someone who rides a board in a sport, such as a snowboarder, a surfer or a skateboarder.
玩板類運動的人
原始詞典資料8 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。
boardernoun/ˈbɔədə/
- 1
A pupil who lives at school during term time.
- The student body consisted primarily of boarders, except for a few children belonging to the school staff.
- 2
Someone who pays for meals and lodging in a house rather than a hotel.
- When I left for college, my parents took on a boarder in my old room to help defray expenses.
- 3
One who boards a vehicle.
- "Calls to set down only" sounds more exciting. What station or train staff has the specific duty of repelling would-be boarders? Are the occupants of the train of such exalted main-line status that suburban interlopers are personae non gratae?
- I have found holding all doors open solves much of this problem, as late boarders can enter the rear and tag in rather than wait the time it takes to get to the front, particularly if the bus shelter or some other obstacle hinders vision and boarding.
- 4
nauticaltransportA sailor attacking an enemy ship by boarding her, or one repelling such attempts by an enemy.
- The captain shouted at the crew to grab arms and repel boarders.
- Sensors show inbound Covenant boarding craft. Stand by to repel boarders.
- 5
Someone who takes part in a boardsport, such as surfing or snowboarding.
- A group of boarders swept past us as we climbed the side of the ski run.
這個拼法也被記錄為下列字的變化形：
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。