gamp

It was quite a good disguise; and a pair of black cotton gloves, two sizes too large, and a sort of lumpy gamp umbrella helped to suggest the character I had in my mind.

In earnest whereof Mrs. Parsley again thumped the floor with her "gamp."

A "gamp" became a slang word for umbrella in the 19th century.

Well, there it is as glaring and apparent as Borrow’s big green gamp or De Quincey’s insularity. 

Hitting, then, is the weak point of the gamp.