Green’s Dictionary of Slang

sweetmeat n.

[SE sweet + meat n. (1)/SE sweetmeat, which is ‘good enough to eat’]

1. an underage or child prostitute.

[UK]Partridge DSUE (1984) 1185/2: from mid-C.19.

2. a mistress.

[UK]Partridge DSUE (1984) 1185/2: from mid-C.19.

3. the penis [SE sweet + meat n. (2) + pun; 1970s+ use is US gay].

Jack Adams his perpetual almanack (2 edn) 27: Whilst he was busie at his work [...] up comes two or three Hectors takes me gentleman, and give him sowre sawce to his sweetmeat.
[UK]Farmer & Henley Sl. and Its Analogues.
[US]B. Rodgers Queens’ Vernacular.
[US]H. Max Gay (S)language.

4. (US Und.) a young woman.

[US]Monteleone Criminal Sl. (rev. edn).
[US]E.E. Landy Underground Dict. (1972).
[US]B. Hamper Rivethead (1992) 93: His lecher’s rollcall of ‘sweetmeat’ and ‘baby cakes’.

5. a general term of affectionate address.

[US]E. De Roo Big Rumble 48: I’m sorry we got to split, sweetmeat. I really go for you.
[US](con. 1950s) D. Goines Whoreson 41: It’s up to you, sweetmeat.
[US]‘Iceberg Slim’ Airtight Willie and Me 164: I gotta pin you down, Sweetmeat.
[US]E. Bunker Mr Blue 240: ‘Hey, sweetmeat,’ she said.

6. see sweet kid under sweet adj.1