Prototype : যন্ত্রপাতি বা কলকব্জার মূল রূপের প্রতিরূপ;
Related Words
proto type  protoplasm  prototype  See Words Also In
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Appropriate Prepositions
Careless of(অসতর্ক): Do not be careless of your health.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Heir to (উত্তরাধিকার পাওয়া): He is an heir to a vast property.
Look up (ডিকশনারি থেকে শব্দার্থ খোঁজা): He is looking up a new word meaning from dictionary.
Urge upon (আহবান জানানো): She urged upon his son the importance of being honest.
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Idioms
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
Cut to the quick (মর্মাহত হওয়া): I was cut to the quick by his birds.
In full swing (পুরোদমে): The school is in full swing after the vacation.
Learn by heart (মুখস্থ করা)— He learnt the poem by heart.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.