What is the meaning of ⰱ?

The second letter of the Glagolitic alphabet.

↑ Schenker, Alexander M. (1995), “Early writing”, in The Dawn of Slavic: An introduction to Slavic philology, New Haven, CT/London, UK: Yale University Press, →ISBN, pages 168–172

↑ Ilievski, Petar H.R. (2002), “Glagolica: An iconic script for visual evangelic preaching”, in Illinois Classical Studies‎, volumes 27–28, →ISSN, →JSTOR, archived from the original on 3 October 2020, pages 153–164

↑ Jung, Hakyung (January 2013), “On the origin of the Glagolitic alphabet”, in Scripta‎, volume 5, archived from the original on 7 October 2021, pages 105–130

Source: wiktionary.org