The term 'thole pole' is a nautical term referring to an OAR used for steering a boat. The crossword solution for the term is 'OAR', which stands for an implement used for rowing or propelling a boat through the water. An OAR is typically held in place by a thole pole, which is a vertical pin or post that is attached to the side of the boat. The thole pole provides a secure point of attachment for the OAR, allowing it to be used for steering the boat.