Keystone Meaning in Bengali

What is the meaning of word Keystone in Bengali/Bangla ?

Defenition of word Keystone

• a central stone at the summit of an arch, locking the whole together.

Example

The final seven rusticated bands are precisely linked to the voussoirs and keystones that define the arches and the niches, the latter exactly the same height as the rectangular openings below.

Other Meaning of Keystone

• MORE

  ঝোঁক trend fad keystone affinity fume proclivity
  সুর keystone
  বক্তব্য remark keystone
  প্রধান ভাব keystone

• NOUN

  খিলানের মধ্যপ্রস্তর keystone