1. (Material Noun-Neuter) A former bronze coin of India, the 12th part of an anna. পুৰণি ভাৰতত প্ৰচলিত এটা ব্ৰঞ্জৰ মুদ্ৰা; মূল্য এক অনাৰ ১২ ভাগৰ এভাগ |

2. The number π ( ; spelled out as pi) is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter. It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve. The number π is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as 22 7 {\displaystyle {\tfrac {22}{7}}} are commonly used to approximate it. Consequently, its decimal representation never ends, nor enters a permanently repeating pattern. It is a transcendental number, meaning that it cannot be a solution of an algebraic equation involving only finite sums, products, powers, and integers. The transcendence of π implies that it is impossible to solve the ancient... from wikipedia.org

3. (Material Noun-Neuter) A former bronze coin of India, the 12th part of an anna. পুৰণি ভাৰতত প্ৰচলিত এটা ব্ৰঞ্জৰ মুদ্ৰা; মূল্য এক অনাৰ ১২ ভাগৰ এভাগ |