the terrifying wizard gaol (GF2)
To gallop or prance. The word was created by Lewis Carroll in the book Through the Looking Glass.
"Gâteau" is a loan word from the French gâteau, "cake", so strictly speaking the first 'a' should be written as â, but in common English use that detail is often omitted.
Any of several plants related to the carnation that have fragrant flowers. This term crops up occasionally in descriptions of Elizabethan gardens. (AHD)
Compare with gillyweed.
Idiot. A variant of the slang noun "get," which also means an idiot (usually in Ireland or the north of England) and which was derived from a rather archaic term for the offspring of any animal (that, in turn, was derived from the verb to beget, meaning "to give birth to".
"an ignorant old git who lived like a pig" (DH22)