1947 C. Woolrich Waltz Into Darkness (1995) 256: The pinkey of her hand [...] rose and descended again, as he watched.at pinky, n.1
1947 Cornell Woolrich Waltz Into Darkness (1995) 9: Two men come out, bearing something dead on a covered litter. ‘Stand back. Yellow jack.’.at yellow jack (n.) under yellow, adj.