Homemade weapons may be needed by certain populations without access to regular weapons, such as prisoners.
Synonyms: many, vary with prison, nation and group
Design parameters:
(1) some feature that can be used to injury
(2) protection to the user's hand (handle, other)
(3) easy concealability (book, rectum, etc)
(4) made from available material
Shiv refers to a cutting weapon with a sharp edge made of metal or glass.
Shank refers to a pointed stabbing weapon made from plastic, metal or glass.