Green’s Dictionary of Slang

sugar n.4

1. [1920s+] (also sugar lump, sugarpie) a general term of endearment, can be used of and to either sex.

2. [1930s+] (orig. US, also sug) an attractive woman.

3. [1930s+] (US black, also sugar lump) an attractive man.

4. [1960s+] (US black) a kiss.

5. [1970s–80s] (US black) diabetes.

In compounds

sugar-baby (n.) (also sugar babe, sugar-doll, sugar puss) [babe n. (3)/baby n. (4)/puss n.2 (2)]

[1920s+] (US) anyone or anything attractive, pleasing; also a direct term of address.

Sugar Hill (n.)

see separate entry.

sugar lump (n.)

1. see sense 1 above.

2. see sense 3 above.

sugarpie (n.)

see sense 1 above.

sugar report (n.) [orig. milit. WWII ]

[1940s+] (US campus) a letter from one’s sweetheart.

sugar scoop (n.) (also sugar walls)

[1950s] the vagina.

sugar shack (n.)

1. [1960s] (US black) spare space used for putting up a temporary guest.

2. [1990s+] somewhere a couple go to have sex.

sugar-stick (n.)

see separate entry.

In phrases

deep sugar (n.) [its ‘sweetness’]

[1940s] (US black) sweet talk.

sweet sugar (n.)

[1980s] (US black) an attractive male.

SE in slang uses

In compounds

sugar-bag (adj.)

see separate entry.

sugar-bush (n.)

[2000s] (S.Afr. gay) the pubic hair [resemblance].

sugar cubes (n.)

[1940s] dice [resemblance].

sugar pimp

see separate entries.