Modern American creation, likely a blend of Bre- and -osha
Breosha is a contemporary American name without a single traditional etymology. It is likely a creative combination of the popular prefix 'Bre-' (as in Breanna or Bree) and the suffix '-osha' (as in Keosha or Latosha), which gained popularity in the late 20th century.
Less common today
Breosha isn't in the latest US Top 1000. It last peaked at #6,772 in 1999.
US births per 5-year period, 1990βpresent (SSA data).