The idiom 'keep the wolf from the door' means-

The idiom 'keep the wolf from the door' means- To have just enough money to be able to eat and live.

keep the wolf from the door
Bangla Meaning: দারিদ্র ঠেকানো।
English Meaning: To have just enough money to be able to eat and live.

Example Sentence:
- She took a second job to help keep the wolf from the door while her husband was unemployed.
- As a student, he took an evening job to keep the wolf from the door.

Source: Merriam-Webster Dictionary, Accessible Dictionary, Cambridge Dictionary.