A white elephant : অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা;
Related Words
a white elephant  awhiteelephant  See Words Also In
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Appropriate Prepositions
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
At lunch (দুপুরের খাবারে): They were talking so much at lunch that their food went cold.
Attacked with(আক্রান্ত): He is attacked with …
Entrust to (কাউকে কোনো কিছু বিশ্বাস করে দেওয়া): He entrusted the thing to me.
Look at (তাকানো): Students look at the blackboard.
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Idioms
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.
Pass away (মারা যাওয়া)— He passed away last night.
Set something right (ঠিক করা)— He will set the machine right.
Short temper (রগচটা)— He is a man of short temper.