DCHP-1 Online
tom-rocker Placer Mining 
n. a kind of cradle operated by one man and used to wash gold from gravel.
- 1936 His equipment was of the simplest -- a shovel, two buckets and a tom-rocker, which sat over at the creek edge, convenient to water.
- 1936 His equipment was of the simplest -- a shovel, two buckets and a tom-rocker, which sat over at the creek edge, convenient to water.