Copper coins; and by extension cash of any denomination

The OED says that although "Breeches are distinguished from trousers by coming only just below the knee, dialectally (and humorously) breeches includes trousers.

Alternative name for sulfer, here implying smoke and fire.

Britain personified as a woman; the figure representing this, depicted wearing a helmet, holding a shield and trident, and usually seated, emblematic of Britain (or England) esp. as an imperial or sea power, or as a symbol of nationalism.

A single sheet with the text printed on one side. Often decorated with woodcut illustrations. Commonly bearing the text of songs - usually without musical notation. Sold cheaply by street vendors and pedlars. Also employed as a medium for articles copied from newspapers, election addresses etc.

Broker: One who, for a commission, buys and sells stocks on behalf of clients. [OED].

Oatmeal with boiling water added [Dictionary of the Scots Language]

Brougham - A one-horse closed carriage, with two or four wheels, for two or four persons. [OED]

Copper coin(s).

Robert the Bruce (1274-1329), King of Scots 1306-1329. led Scotland during the First War of Scottish Independence against England most famous for his viatory at Bannockburn, 1314

Colloquial name for Birmingham mainly used in the midlands of England

Isambard Kingdom Brunel FRS (1806–1859) an English mechanical and civil engineer who desingedand oversaw the construction of; amopng other things : the Great Western Railway, the SS Great Western (1838), SS Great Britain (1843) and the SS Great Eastern (1858)
https://en.wikipedia.org/wiki/Isambard_Kingdom_Brunel

bubbing: To send (something) up in bubbles [OED]

From 17th c. onwards often applied to delusive commercial or financial schemes,

Buck up To dress up [OED]

Buck = A gay, dashing fellow; a dandy, fop, ‘fast’ man. Used also as a form of familiar address. (OED)

Buffer: A mildly denigratory term for a bumbling, elderly person usually of the middle or upper classes. [CPB]

The apparatus for deadening the force of a concussion; as a round plate or cushion (usually supported by a strong spring) fixed in pairs at the front and back of railway carriages or engines, or on the face of a terminal wall of a line of railway. [OED]

BAD bug, see bug (recursion!)

Bull: One who endeavours by speculative purchases, or otherwise, to raise the price of stocks. Bull was originally a speculative purchase for a rise. (OED)