/'grʌmbl; `ˇrʌmbl/
v
1 [I, Ipr] ~ (at/to sb) (about/at/over sth) complain or protest in a bad-tempered way 发怨言; 鸣不平
*Stop grumbling! You've got nothing to complain about. 别抱怨了! 你没什么可抱怨的.
* Why grumble at me about your own stupid mistakes? 你自己犯了愚蠢的错误, 为什么向我抱怨?
* grumble at one's low pay/at being badly paid 抱怨待遇低[差].
2 [I, Ip] ~ (away) make a deep continuous sound 发生低沉、连续的声音
*thunder grumbling (away) in the distance 远方隆隆的雷声
* the sound of one's stomach grumbling 肚子咕咕的叫声
* (fig 比喻) a grumbling (ie intermittently painful) appendix 间歇性疼痛的阑尾.

n
1 complaint 怨言; 牢骚
*a person full of grumbles 牢骚满腹的人
* I don't want to hear another grumble from you. 我不愿再听到你的怨言了.
2 rumble 隆隆声; 辘辘声
*a distant grumble of thunder 远方雷声隆隆.

v
[Date: 1500-1600; Origin: Probably from Old French grommeler, from Middle Dutch grommen]
[I and T]
to keep complaining in an unhappy way
= moangrumble about/at
　Farmers are always grumbling about the weather.
grumble that
　A few passengers grumbled that their cabins were too small.
　'This is boring,' Kathleen grumbled.
[I]
to make a low continuous sound
= rumble
　Thunder grumbled overhead.
mustn't/can't grumble
BrE spoken used to say that you are fairly healthy and happy
　'How are you today?' 'Mustn't grumble.'
>grumblen[C]
　the usual grumbles about pay