Penumbra : চন্দ্র বা সূয্য গস্খণের সময় পূর্ণ ছায়ার চারিদিকে আংশিক ছায়া;
Related Words
penumbra  penumbral  penumbras  See Words Also In
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Appropriate Prepositions
Acquit of (অব্যাহতি দেয়া): The chief justice acquitted him of the charge of murder.
Averse to (বিমুখ): Rahim was averse of your various problems.
Convict of(দোষী সাব্যস্ত হওয়া): The accused person was convicted of the murder.
Take pity on (দয়া করা): Take pity on the helpless people.
Wish for (প্রত্যাশা করা): Everybody wish for happiness.
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Idioms
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Bare word (শুধু মুখের কথা, স্বাক্ষী প্রমানহীন কথা-n) He believed your bare word and now he has been played false with.
Let loose (বল্গাহীনভাবে ছেড়ে দেয়া): He let his horse loose in the field.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.