DCHP-1 Online
poling bottom 
a firm bottom to a shallow rir or lake, permitting the use of a setting-pole.
See also: setting-pole
- 1954 There were stretches of sheer cliff, with no poling bottom, here we could make our way up the river only by poling horizontally against the rock.
- 1956 Where the rocks had fallen, the bottom pitched steeply, and gave treacherous poling bottom.
- 1954 There were stretches of sheer cliff, with no poling bottom, here we could make our way up the river only by poling horizontally against the rock.