名詞 flop:

1. an arithmetic operation performed on floating-point numbers
   同義詞：floating-point operation
2. someone who is unsuccessful
   同義詞：dud, washout
3. a complete failure
   同義詞：bust, fizzle
4. the act of throwing yourself down
   同義詞：collapse

動詞 flop:

1. fall loosely
2. fall suddenly and abruptly
3. fail utterly; collapse
   同義詞：fall through, fall flat, founder

副詞 flop:

1. with a flopping sound
2. exactly
   同義詞：right

1. Despite all the publicity, her latest novel was a complete flop.
   她的最新小說盡管廣為宣傳，結(jié)果還是徹底失敗。
2. I'm ready to flop.
   我要累倒了。
3. The fish we'd caught flopped around in the bottom of the boat.
   我們捕到的魚在船底亂蹦。
4. Exhausted, he flopped (down) into the nearest chair.
   他累得一下子坐到離他最近的小沙發(fā)上。
5. The pile of books flopped noisily onto the floor.
   那摞書劈里啪啦地散落到地上。

flop

v.（動詞）
flopped,flop.ping,flops
v.intr.（不及物動詞）
To fall or lie down heavily and noisily.
猛落：沉重而有聲地掉下或放下
To move about loosely or limply:
亂跳，拍動：松散或無力地移動：
例句：
The dog`s ears flopped when it ran.
狗奔跑時它的耳朵搖晃不已

Informal To fail utterly:
【非正式用語】 徹底失?。?/br>例句：
The play flopped.
表演失敗了

Slang
【俚語】
To rest idly; lounge.
懶惰地閑憩；懶洋洋地躺臥
To go to bed.
上床睡覺
v.tr.（及物動詞）
To drop or lay (something) down heavily and noisily:
猛放：（把某物）重重有聲地扔下或放下：
例句：
flopped the steak onto a platter.
把一塊牛排重重地扔到一張大淺盤里

n.（名詞）
The act of flopping.
猛落，猛摔：重擲的動作
The sound made when flopping.
重擲的聲音
Informal An utter failure.
【非正式用語】 徹底失敗

來源：
Alteration of flap
flap的變化

【引伸】
flop.per
n.（名詞）