DCHP-1 Online
driftpile 
n. a large pile of driftwood in a river.
- 1858 (1863) [We halted at noon . . . upon an enormous island of driftwood, one of many that block the centre of the channel. . . .]
- 1927 Many rocky islands break up the [Slave] river into intricate channels. Log-jams and drift-piles are numerous and troublesome.
- 1955 Yet, balancing the canoe between the two currents that divided on the driftpile . . . they somehow poled, paddled and shoved themselves across to the main shore and slack water.
- 1858 (1863) [We halted at noon . . . upon an enormous island of driftwood, one of many that block the centre of the channel. . . .]