Cotter : চাবি;
Related Words
caster  cater  caterer  catheter  cautery  chatter  chatterer  cheater  cither  coaster  coder  coterie  cottar  cotter  cuter  cutter  See Words Also In
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Adapt to(খাপ খাওয়ানো): Everybody must adopt himself to new environment.
Bask in(রোদ পোহানো): The boys and girls are basking in the sun right now.
Cast aside (ছুঁড়ে ফেলা): As soon as they become rich they cast aside their poor friends.
Faith in (বিশ্বাস): I have no faith in him.
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Idioms
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Crocodile tears (মায়াকান্না): He shed crocodile tears at our misery.
In lieu of (পরিবর্তে): Give me this pen in lieu of that.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.