A white elephant : অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা;
Related Words
a white elephant  awhiteelephant  See Words Also In
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Appropriate Prepositions
Abstain from(বিরত থাকা): I am trying to abstain from sweets for my new diet.
Burst out a laughter(হাসিতে ফেটে পড়া) He bursts out a laughter.
Conceal from(লুকানো) Do not conceal anything from me.
Desist from (বিরত থাকা): She desisted from making this.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
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Idioms
At a standstill (নিশ্চল, অচলাবস্থায়-adj.) The discussion is now at a standstill.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.
To meet trouble half-way (পুরোপুরি মোকাবেলার আগেই হাল ছেড়ে দেয়া): He met trouble half way after getting the instructions.