DCHP-1 Online
shell ice North 
a formation of ice which once covered water but which stands alone as a shell, the water having receded.
- 1924 The sled and I fell through the shell ice on to the gravel beach about seven feet below.
- 1963 Snow covered the ground in the morning, and a thin border of shell ice clattered on the lake shore.
- 1924 The sled and I fell through the shell ice on to the gravel beach about seven feet below.