Lion's share( সিংহভাগ ) He took the lion's share of the profit.
In order to ( উদ্দেশ্য ) He came here in order to meet my mother.
pulling your leg( কৌতক করা ) Do not take it seriously, i was just pulling you leg
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.
At arm’s length( দূরে ) Try to keep the bad boy at arm’s length.
