Black lead : কৃষ্ণসীস; কালো-সীস;
Related Words
black lead  black letter  black-lead  block letter  See Words Also In
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Appropriate Prepositions
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Bridge over (সেতু): The only entrance to Allahabad in that direction was by a bridge over the Jumna.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Rule over (শাসন করা): In the absence of the Parliament, the President rules over the country.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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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.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Set something right (ঠিক করা)— He will set the machine right.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.