A white elephant : অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা;
Related Words
a white elephant  awhiteelephant  See Words Also In
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Bar to(বাধা): Poverty is not a bar to happiness.
Innocent of (নির্দোষ): The maid servant was proved innocent of the alleged theft.
Object to (প্রতিবাদ করা): Many people objected to the remarks of the leader.
Send for (ডেকে পাঠানো): Send for a doctor immediately.
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Idioms
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Milk and honey – (প্রাচুর্য)- He lives with milk and honey.
Nip in the bud (অঙ্কুরে বিনষ্ট হওয়া): All his hopes were nipped in the bud.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.