The ordinal form of the number twenty, indicating a position.

बीसवां

English Usage: She celebrated her twenty-first birthday last week.

Hindi Usage: उसने पिछले हफ्ते अपना बीसवां जन्मदिन मनाया।

Describing a rank or sequence in an ordered set.

क्रमांक 21

English Usage: He was the twenty-first person to sign the petition.

Hindi Usage: वह याचिका पर हस्ताक्षर करने वाला इक्कीसवां व्यक्ति था।