DCHP-1 Online
tongue 
n. See 1850 quote.
- 1850 (1851) A tongue is a point of ice projecting nearly horizontally from a part that is under water. Ships have sometimes run aground upon tongues of ice.
- 1850-51 (1852) The object always is, in fastening to an iceberg, to look for a side which is low and sloping without any tongues under water.
- 1853 I felt at first extremely solicitous about the screw, dreading that some of the floe pieces which had long projecting tongues under water would catch it.
- 1850 (1851) A tongue is a point of ice projecting nearly horizontally from a part that is under water. Ships have sometimes run aground upon tongues of ice.