By the by ( প্রসঙ্গক্রমে ) By the by I came to know that he was ill.
Widow's mite ( দরিদ্রর ক্ষুদ্র দান ) A widow's mite is no less important than a large contribution of a rich man.
Fish out of water ( অস্বস্তিকর অবস্থায় ) When he came to the village, he felt like a fish out of water.
At bay ( কোনঠাসা ) The tiger was at bay in the bush.
In cold blood ( ঠান্ডা মাথায় ) They committed this murder in cold blood.
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.