Meaning of sinister bar in English:

sinister bar

noun

rare Heraldry
  • A mark of illegitimacy; = "bar sinister".

    Used in error (presumably for sinister bend), since the heraldic bar runs horizontally across the shield, and therefore cannot be reversed in the manner of a bend sinister.

Origin

Mid 17th century; earliest use found in George Buck (fl. 1623–1646).