having a frame or reinforcements strengthened or made rigid by brass, bronze, etc., as a trunk or chest
2.
rigid; inflexible
brassbound regulations
3.
impudent; brazen
brassbound presumption
Word origin
[1900–05; brass + -bound1]This word is first recorded in the period 1900–05. Other words that entered Englishat around the same time include: Young Turk, decompression, geopolitics, hydroplane, internship