Green’s Dictionary of Slang

seam n.

[1980s+] (US drugs) $10 worth of phencyclidine, wrapped in tinfoil.

SE in slang uses

In compounds

seam squirrel (n.) (also seam wolf)

[late 19C–1980s] (US) a body louse.

In phrases

down to one’s seams [the seams of one’s empty pockets]

[late 19C] (US) absolutely impoverished.

red seam (n.) [the red seam that runs up the uniform trousers]

[1910s+] (W.I.) a police officer.