Well-head : আদি উৎস;
Related Words
well oiled  well-head  well-to-do  welladay  welled  wellhead  welloiled  willed  See Words Also In
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Appropriate Prepositions
Appear at/in(উপস্থিত হওয়া): I should appear at/in the exam hall in time.
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Destitute of (নিঃস্ব; বিবর্জিত): He is destitute of any friend here.
Indispensable to (অত্যাবশ্যকীয়): Your help is indispensable to him.
Make of (কোনো উপকরণ দ্বারা সরাসরি তৈরী বোঝাতে): This necklace is made of gold.
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Idioms
At a low ebb (in an unfavorable situation প্রতিকুল অবস্থায়, ভাটির মুখে) The popularity of this singer is now at a low ebb.
At times (মাঝে মাঝে): He at times comes here.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Run into debt (ঋণগ্রস্ত হওয়া)— He ran into debt.
Up to (পর্যন্ত) - I have done the exercises up to page 40.