大學老師（教授）
兩個意思是同一個畫面在兩地的不同切法：英式較窄、指最高一級的那位；美式較寬、泛指大學任教者。
top university teacher (UK) · noun · B1
A teacher of the highest rank in a university department (in British English).
教授
核心畫面
Picture a senior university teacher — someone who has mastered a subject and openly teaches it from the front of the hall. The same picture sits behind both senses; only the rank shifts a little between British and American use.
可以想成一位「大學裡資深的老師」——一個精通某門學問、站在講台前公開教授它的人。兩個意思背後其實是同一個畫面，只是在…更多收起
可以想成一位「大學裡資深的老師」——一個精通某門學問、站在講台前公開教授它的人。兩個意思背後其實是同一個畫面，只是在英式和美式用法裡，這個頭銜的「層級」稍微不一樣。From the word’s history
From Latin 'professor' = one who publicly declares/professes (a subject), from 'profiteri' to declare openly — a teacher who openly professes expertise in a field.
源自拉丁文 professor，意思是「公開宣講某門學問的人」（來自 profiteri＝公開聲明）——也就是公開表明自己在某領域有專長、並把它教出來的人。
Online Etymology Dictionary (etymonline.com), s.v. 'professor'
One branch
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。
Professornoun
- 1
The title for someone who holds the job of professor.
- 2
derogatoryinformalA mock title for a person seen as pedantic or obsessive on a topic.
- This is just what I wanted. I got professor environment pants over here, and I can't get my jetski started. How am I gonna get back?
professornoun/pɹəˈfɛs.ə/
- 1
The most senior rank for an academic at a university or similar institution.
- Professor is what you become after teaching for twenty to thirty years.
- 2
informalA teacher or faculty member at a college or university regardless of formal rank.
- 3
archaicOne who professes something, such as a religious doctrine.
- […] I alvvayes thought / It vvas both impious and vnnaturall, / That ſuch immanity and bloody ſtrife / Should reigne among Profeſſors of one Faith.
- As for Religion, I have not said, much lesse meant irreverently of it, or of the Professors thereof.
- 4
obsoleteA practitioner, one who (publicly) practises or teaches an art or skill.
- Two young men of familiar acquaintance … were one euening at a common Inne of this town (as I haue heard) where the one of them shewed his skill on the Virginals, to the no little contentement of the hearers. Nowe as diuers guests of the house came into the room to listen, so among the rest entered an artificiall Conny-catcher, who as occasion serued, in the time of ceissing betweene the seueral toyes and fancies hee plaid: very much commended his cunning, quicke hand, and such qualities praiseworthy in such a professour.
- 5
slangA pianist in a saloon, brothel, etc.
- You could hear […] pianos under the hands of whorehouse professors sounding like they came with keys between the keys.
- 6
The puppeteer who performs a Punch and Judy show; a Punchman.
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。