DCHP-2

jam ((n.)) DCHP-1 (pre-1967)

• 1 n.

  a pile-up of ice-cakes in a river or other narrow watercourse. Also, earlier, spelled jamb.

  See also: ice-cake  ice-jam  

• 2 n. — Lumbering

  a massing together of logs, as in a river drive, as a result of some obstruction to their forward progress.

  See also: log-jam (def. 1)  timber jam