Ratchet : র্যাচিট; দান্তাল চাকা-বিশেষ; ছিটকিনি-লাগানো একধরনের দাঁতওয়ালা চাকা যা কেবল একদিকেই ঘোরে;
Related Words
rat catchers  ratcatcher  ratchet  ratchets  raticide  retched  retouched  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Ashamed of(লজ্জিত): Nandini was ashamed of his wrong-doing.
Identical with (একই ধরণের): You are identical with your sister.
Look at (তাকানো): Students look at the blackboard.
Penalty for, with (দণ্ড, জরিমানা): She has paid the penalty for the misuse of power with two years in prison.
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Idioms
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Soft Soap (নিজ অভিপ্রায়ে/অভিসন্ধিতে তোষামোদ করা): He was expert in soft soap.
Up and doing (উদ্যোগী): Be up and doing and then you will succeed in your life.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.