block

   [common; from process scheduling terminology in OS theory]

   1.  vi.  To  delay  or  sit  idle while waiting for something. "We're
   blocking until everyone gets here." Compare {busy-wait}.

   2.  block on vt. To block, waiting for (something). "Lunch is blocked
   on Phil's arrival."

[glossary]
[Reference(s) to this entry by made by: {hang}{sleep}]