Cog wheel : দন্তযুক্ত চক্র;
Related Words
chessel  cog wheel  cog-wheel  cow whale  cowl  See Words Also In
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Decide upon (সিদ্ধান্ত করা): We have not yet decided whether we are going to picnic.
Fantasize about (কল্পনা করা): They fantasized about winning the lottery.
Inquire into (খতিয়ে দেখা): The police officer will inquire into the matter.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
Bear (a) grudge (bear hostility to— শত্রুতা বা বিদ্বেষ পোষন করা—V) We should not bear (a) grudge against our brethren.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.