shiv       
 noun [ C ]  slang (also chiv) uk/ʃɪv/ us/ʃɪv/
 (尤指自制的、用作武器的)刀,锐器
a knife or other sharp or pointed object used as a weapon, often one that is homemade
  Most often, shivs are used to conduct the business of gangs. 最常见的,就是用刀子进行帮派生意。 
 They still might stick a shiv in your abdomen. 他们还可能在你的肚子上插把刀。 
 See also: shank noun (KNIFE)
 - More examples
 - Her eyes fell on the shiv that he held lightly in his hand.
 - Hundreds of inmates took up shivs and shanks fashioned from broken wooden chapel benches and steel bed frames.
 - Most prisons serve chicken patties because the bones in pieces of chicken can be sharpened into a "shiv".
 
shiv       
verb [ T ]  slang (also chiv) uk/ʃɪv/ us/ʃɪv/ -vv-
 用刀(或其他自制锐器)袭击
to attack someone with a shiv
  Judith gets shivved in a drug deal.  朱迪思在一次毒品交易中被捅了一刀。  
The court was told that after knifing the teenager, the attacker taunted him, saying “What's it like being shivved?”  法庭被告知,在用刀砍伤少年后,袭击者还用嘲讽的口吻说:"被刀砍是什么感觉?"  
 - More examples
 - They can't imagine that he would shiv them in the back.
 - He will have over a hundred years' good behaviour because it's hard to shiv anybody while you are dead.