Tejaswini is from the Sanskrit tejas (तेजस् — brilliance, radiance) + vinī (विनी — possessing) — radiant one. Tejaswini Pandit (born 1986) is a leading contemporary Marathi cinema actress — niece of the iconic Suhas Pandit. Films include Mitwaa (2015), Dr. Multiple Maharashtra State Film Awards wins.
Tejaswini does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Tejaswini reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.