A tiny wingless insect holding on to hair or skin, feeding on the blood of whoever it is riding on. It arrives without being invited, it is hard to see, and it is hard to get rid of. The other uses grow out of that one picture: the work of picking the insects off, and the name thrown at a person who lives off other people and makes them feel unclean.
From the word’s history
Middle English lous, from Old English lūs, from Proto-Germanic *lūs; cognate with German Laus and Dutch luis. The insect meaning has stayed almost unchanged the whole way.
中古英語 lous ← 古英語 lūs ← 原始日耳曼語 *lūs，德文 Laus、荷蘭文 luis 同源。指「蟲」的意思一路幾乎沒有變過。罵人的用法是後來的比喻，來源資料沒有把它記成字源的一部分。
Wiktionary entry supplied in this packet (source_ref kaikki:3f6f69a190036ae4:313439241:101594)
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原始詞典資料6 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
lousenoun詞源 1/laʊs/
- 1
A small parasitic wingless insect of the order Psocodea.
- 2
datedA contemptible person; one who is deceitful or causes harm.
- He said: "Thanks, friend; but you're wasting your time. You better warn Crocker. If that louse makes a play for me, he'll get hit with Chicago lightning!"
- It's then that those louses go back to their spouses. Diamonds are a girl's best friend.
- 3
slangcomputingengineeringmathematicsThe currency sign ¤.
louseverb詞源 1/laʊs/
- 1
To remove lice from; to delouse.
- ‘Nor have I combed, washed or loused myself this six months past, there being so few daring deeds to do on this Highway.’
- There were a few wire-netted enclosures to keep young chickens from the hawks, but the fowls wandered at large, coming about the hut to ruffle their feathers in the dust, and louse themselves, and pick up scraps.
這個拼法也被記錄為下列字的變化形：
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。