Penknife : ক্ষুদ্র পকেট ছুরি; পাখির পালক কাটিয়া কলম বানানর জন্য ছুরি;
Related Words
pen knife  pen-knife  penknife  penknives  See Words Also In
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Appropriate Prepositions
Argue against (বিপক্ষে বলা): She argued against the bill.
Busy with(ব্যস্ত থাকা): Rahim is now busy with her homework.
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
Solution to (সমাধান): None can solution to every problem.
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Idioms
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Out of sorts (সামান্য অসুস্থ): The baby is out of sorts after playing.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Run into debt (ঋণগ্রস্ত হওয়া)— He ran into debt.
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.