Definition of shivs:
(n) :
(slang, countable) A knife, especially a makeshift one fashioned from something not normally used as a weapon (like a plastic spoon or a toothbrush).
(v) :
(transitive, slang) To stab (someone) with a shiv.
(v) :
(transitive, slang, by extension) To stab (someone) with anything not normally used as a stabbing weapon.
(n) :
(uncountable) A particular woody by-product of processing flax or hemp.
(n) :
A male given name from Sanskrit mainly used in India.
(n) :
A diminutive of the female given name Siobhan.