At once back and call ( বাধ্য ) He is always at my back and call.
A blessing in disguise ( বিপরীতে হিত ; প্রথমে খারাপ হিসেবে মনে হলেও পরবর্তীতে ভালো হয় ) Sam's motorcycle accident was a blessing in disguise because he got enough insurance money.
Bring to book ( শাস্তি দেওয়া ) He should be brought to book for his misconduct.
To the backbone ( হাড়ে হাড়ে ) The boy is wicked to the backbone.
Of course ( অবশ্যই ) Of course, you know what that means
By and large ( প্রধানতঃ ) People in our village are by and large farmers.