Green’s Dictionary of Slang

chiv n.1

also chev, chevy, chib, chieve, chiff, chive, chivie, chivvy, chivy, skiv
[Rom. chiv, chive, a knife]

1. [late 17C+] (UK Und.) a knife or razor.

2. a knife slash, a stab.

3. [1960s+] (also chib-mark) a scar (from a knife slash).

4. [2000s+] something that mimics a pointed weapon.

In compounds

chiv artist (n.) (also chib man, chib merchant, chev man, chiv man) [-artist sfx]

[1920s–50s] (US) an expert in using a knife.

chive-fencer (n.) [-fencer sfx]

1. [mid-19C] a street-seller of knives and cutlery.

2. [1900s] one who harbours murderers.

chiving-lay (n.) [lay n.3 (1)]

1. [18C–early 19C] (also chieving-lay) cutting the braces of a coach (the strong leather straps that suspend the body of a coach from the springs); the coachman then dismounts and, while his attention is distracted by one robber, an accomplice plunders the boot of its contents; thus chiving layer, one who robs in this way.

2. [late 18C–early 19C] (UK Und.) cutting open the back of a coach to steal the large wigs worn by the passengers.

3. [mid-18C] the cutting off of a woman’s belt, thus stealing any jewellery or watches that might be attached.