名詞 knell:

1. the sound of a bell rung slowly to announce a death or a funeral or the end of something

動詞 knell:

1. ring as in announcing death
2. make (bells) ring, often for the purposes of musical edification
   同義詞：ring

1. The decision sounded the knell of our hopes.
   這項決議宣告我們的希望落空。
2. The bell is knelling.
   喪鐘已經(jīng)敲響。
3. Their refusal rang the knell of our hopes.
   他們的拒絕是我們希望破滅的兇兆。

knell

v.（動詞）
knelled,knell.ing,knells
v.intr.（不及物動詞）
To ring slowly and solemnly, especially for a funeral; toll.
緩慢地敲鐘（尤指敲喪鐘）：緩慢而莊嚴地鳴響，特別是在葬禮上；鳴鐘通報
To give forth a mournful or ominous sound.
發(fā)出哀鳴：發(fā)出哀傷或不祥的聲音
v.tr.（及物動詞）
To signal, summon, or proclaim by tolling.
鳴鐘傳信號，鳴鐘召集：用敲鐘的方式指示、召集或宣布
n.（名詞）
The sound of a bell knelling; a toll.
鳴鐘通報：緩慢而莊嚴地鳴鐘的聲音；鳴鐘通報
A signal of disaster or destruction.
兇訊，噩耗：災難或毀滅的信號

來源：
Middle English knellen
中古英語 knellen
from Old English cnyllan
源自 古英語 cnyllan