Green’s Dictionary of Slang

second adj.

SE in slang uses

In compounds

second banana (n.) [show business use second banana, a supporting comedian to the star, a ‘straight man’]

[1940s+] the second most important person, the second-in-command.

second closet (n.) [closet n. (2)]

[1990s+] (gay) the hiding of one’s specific sexual preferences and practices, even if the basic fact of homosexuality can be admitted; also used of domestic violence within same-sex relationships.

second-hand sue (n.) [SE second-hand + assonant use of proper name Sue] [1940s–50s] (Aus.)

1. a worn-out prostitute.

2. an ageing passive homosexual.

second line (v.)

[1910s+] (US) to follow a leader or someone first-rate, with the hope of advancement or promotion.

In phrases

second hole from the back of the neck (n.)

[2000s] the vagina.

second-storey job (n.) (also second-storey trade,, second-story...) [job n.2 (1a)]

[late 19C+] (US) a break-in, spec. one that involves climbing above ground level; also attrib.

second-storey man (n.) (also second-storey mug, ...thief, ...worker, second-story...) [mug n.1 (5a)/worker n.1 (1)]

[late 19C+] (US) a thief who climbs into buildings above the ground floor.