A white elephant : অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা;
Related Words
a white elephant  awhiteelephant  See Words Also In
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Appropriate Prepositions
Desire for (আকাঙ্ক্ষা করা): He has no desire for money.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
Pleased with (সন্তুষ্ট): Shamim is pleased with all his employees.
Run over (চাপা পড়া): The man was run over by a truck.
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Idioms
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
Be all and end all (the ultimate out come- চরম পরিণতি—n) A loss of one million taka was the be all and end all of the projects.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
To the point (সঠিক) - The boy answered the question to the point.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.