'Staff' in the Bible

let it fall on the head of Joab, and on all his father's house; and let there not fail from the house of Joab one that has an issue, or that is a leper, or that leans on a staff, or that falls by the sword, or that lacks bread!

And the man that will touch them provideth himself with iron and the staff of a spear; And they shall be utterly burned with fire in their place.

He also smote the Egyptian, an imposing man: and the Egyptian had a spear in his hand; and he went down to him with a staff, and plucked the spear out of the Egyptian's hand, and slew him with his own spear.