1. noun /lɒɡ,lɑg,lɔg/
They walked across the stream on a fallen log.
b) Any bulky piece as cut from the above, used as timber, fuel etc.
I know he hadn’t surfed on a log much in his childhood
2. verb /lɒɡ,lɑg,lɔg/
b) To cut down (trees).
Wikipedia foundation.