What is the meaning of Key in bengali?

Meaning(s):

1. serving as an essential component
2. effective
3. producing a desired effect
4. metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated
5. something crucial for explaining
6. pitch of the voice
7. any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music
8. a kilogram of a narcotic drug
9. a winged often one-seed indehiscent fruit as of the ash or elm or maple
10. United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812
11. the poem was later set to music and entitled `The Star-Spangled Banner' (1779-1843)
12. a coral reef off the southern coast of Florida
13. (basketball) a space (including the foul line) in front of the basket at each end of a basketball court
14. usually painted a different color from the rest of the court
15. a list of answers to a test
16. a list of words or phrases that explain symbols or abbreviations 1
17. a generic term for any device whose possession entitles the holder to a means of access
18. mechanical device used to wind another device that is driven by a spring (as a clock) 1
19. the central building block at the top of an arch or vault 1
20. a lever that actuates a mechanism when depressed
21. identify as in botany or biology, for example
22. provide with a key
23. vandalize a car by scratching the sides with a key
24. regulate the musical pitch of
25. harmonize with or adjust to
26. प्रमुख the key cause of the problem
27. कुंजी = board The keyboard of this computer is out of order.
28. गुप्त = place I decided a key place to meet her.
29. मूल = secret It,s very difficult to know the key secret of universe.
30. मुख्य = voice This song has the key voice of Rafi.
31. मुख्य = important Just summarise the key points of his speech.
32. महत्वपूर्न = important The key persons were absent in the meeting.
33. सुर = music, melody Laxmikant-Pyarelal's key is extremely enchanting.
34. टेक = music He was singing in different keys.
35. टीका = book This is another key of Ramayana.
36. व्याख्या = interpretation What is the key of this paragraph.
37. उपाय = solution Is there any key of this problem.
38. चाबी = thing I lost my key.
39. फेंचकश = tool Different types of key are used to open as a radio.
40. चाबी = winder The key of the clock is stuck.
41. मनाना = adapt Can you key him in his favour.
42. संकेत भेजना = hint I had keyed you but you didn't get it.
43. चाबी लगाना = lock-key See, whether you have keyed the lock or not!
44. Cardinal, Central, Fundamental, Primal, Operative, Tonality, Samara, Key fruit, Francis Scott Key, Cay, Florida keys, Paint, Winder, Keystone, Headstone, Identify, Discover, Key out, Distinguish, Describe, Name
45. Atonality