noun, plural pike·staves [pahyk-steyvz] /ˈpaɪkˌsteɪvz/.
Examples from the Web for pikestaff
The case is as plain as a pikestaff, and the more one goes into it the plainer it becomes.Adventures of Sherlock Holmes|A. Conan Doyle
He sent him to Sheffield after you; that is plainer than a pikestaff.Dariel|R. D. Blackmore
They are as plain as a pikestaff—only any man can be bamboozled by the silliest of them.The Career of Katherine Bush|Elinor Glyn
By his side Hogben, the gatewarden, had much ado to hold his pikestaff across his horse's crupper in the thick of the people.Privy Seal|Ford Madox Ford
Why, you are as plain as a pikestaff, and as free-spoken as if you had no secrets in the world.