Green’s Dictionary of Slang

kiddy n.

also kidey, kiddey, kiddie
[fig./joc. uses of kid n.1 ]

1. [late 18C–mid-19C] a fashionable, flashy young man, a rake, a pimp or a thief; thus rolling kiddy, a dandy-cum-thief, or a dandy who dresses like a smart thief.

2. [late 18C+] a child; cite 1775 is used to a girlfriend.

3. [19C+] a man.

4. [mid-19C+] (later US black) a friend or fellow, a person.

5. [mid-19C] stage-coach driver.

6. [mid-19C] a hat fashionable among small-time but dandified thieves. It featured a broad ribbon passing through a large buckle at its front.

7. [mid-19C–1900s] a pimp.

8. [1920s+] as the kiddy/kiddie, the most important person.

9. [1970s] (US black) one who is seen as less important than the speaker.

In derivatives

kiddyish (adj.)

1. [early 19C–1910s] stylish, showily dressed.

2. [mid-19C] frolicsome, jovial.

In compounds

kiddy-fiddler (n.) (also kiddie-fiddler) [fiddle v.1 (3)]

[2000s] a paedophile.

kiddy porn (n.) (also kiddie porn)

[1970s+] pornography that features the sexual exploitation of young (sometimes very young) children. The practice has been going on for very many years; the term emerged into wider use during the mid-1980s.