What is the X in X-mas?
List processing language involving stack operations. "SPRINT - A Direct Approach to List Processing Languages", C.A. Kapps, Proc SJCC 30 (1967). Sammet 1969, p 462.
in bicycle racing, a competition over a 1,000-metre (1,094-yard) course (500-metre for women) with time taken only over the last 200 metres (219 yards).