DCHP-1 Online
timber jam Lumbering 
n. a massing together of logs, as in a river drive, as a result of some obstruction to their forward progress.
See also: jam ((n.)) (def. 2)
- 1887 (1888) . . . on one of the huge timber jams which so often occurred we passed close to a wolverene. . . .
- 1910 Then, crossing a timber jam on the frozen bed of the Teelee, the sled suffered a wrenching capsize. . . .
- 1887 (1888) . . . on one of the huge timber jams which so often occurred we passed close to a wolverene. . . .