vi.

1. 挖地；翻掘；搜寻[Q]
   The dog was grubbing about under the bush, looking for a bone.

   那狗在灌木丛中翻找骨头。

   We helped the farmer to grub for potatoes.

   我们帮助农夫挖马铃薯。

2. 苦干[（+on/away）]

vt.[(+up/out)]

1. 挖出；根除
   grub up weeds

   挖除杂草

2. 搜寻出

n.

1. 幼虫；蛆[C]
2. 【口】食物[U]
   Can I come? I'll bring my own grub.

   我能来吗？我自带食物。

3. 苦干的人[C]

n.

1. the larva of an insect, especially a beetle.
   ▸a maggot or small caterpillar.
2. informal food.

v.

1. dig shallowly in soil.
   ▸ (grub something up) dig something up.
2. search clumsily and unmethodically.
3. do demeaning work in order to achieve something.