名詞 belfry:

1. a bell tower; usually stands alone unattached to a building
   同義詞：campanile
2. a room (often at the top of a tower) where bells are hung

1. Everybody knows the old man's got bats in the belfry, but some of his ideas are not as crazy as they sound.
   大家都知道這老頭兒精神有點(diǎn)失常，可是他有些想法聽起來并不那么古怪。

bel.fry

n.（名詞）
【復(fù)數(shù)】 bel.fries
A bell tower, especially one attached to a building.
鐘樓：特指附加于另一個建筑物的鐘樓
The part of a tower or steeple in which bells are hung.
鐘樓或尖塔懸掛鐘的部分

來源：
Middle English belfrei
中古英語 belfrei
from Old North French belfroi
源自 古法國北方方言 belfroi
alteration of Old French berfrei, berfroi * see bhergh- 2
古法語 berfrei的變化, berfroi *參見 bhergh- 2

【引伸】
bel.fried
adj.（形容詞）
<注釋>The wordsbell and belfry seem obviously related, but in fact thebel- portion of belfry had nothing to do with bells until comparatively recently. Belfry goes back to a compound formed in prehistoric Common Germanic. It is generally agreed that the second part of this compound is the element.frij-, meaning .peace, safety.. The first element is either.bergan, .to protect,. which would yield a compound meaning .a defensive place of shelter,. or.berg-, .a high place,. which would yield a compound meaning .a high place of safety, tower..Whatever the meaning of the original Germanic source, its Old French descendantberfrei, which first meant .siege tower,. came to mean .watchtower.. Presumably because bells were used in these towers, the word was applied to bell towers as well.The Old North French alterationbelfroi, which reminded English speakers of their native word belle (our bell ), entered Middle English with the sense .bell tower,. first recorded in 272.
bell 和 belfry 這兩個詞似乎顯著相關(guān)， 但事實(shí)上直到最近，belfry 詞里的 bel 部分才同.鐘.這個詞聯(lián)系起來。 Belfry 源于史前普通日耳曼語的復(fù)合詞。 一般認(rèn)為這個復(fù)合詞的第二部分是frij-， 意思是.和平、安全.。 它的第一部分或是.bergan.， 意為.保護(hù).， 該復(fù)合詞就當(dāng).隱蔽防御之地.講；或是berg 意為.高處.， 該詞就是.安全高處；塔.的意思。無論其日耳曼語來源意思是什么，它衍生成古法語的berfrei， 原意為.圍塔.，后意為.望塔.。據(jù)推測由于鐘被用于這些塔里，所以這個詞也開始指鐘塔了。belfroi 作為古北法語的變體它使英語使用者想到了自己的母語中 belle 一字（我們寫做 bell ）， 進(jìn)入中古英語后意為.鐘樓.，首次記載于272年