bell hole definition
bell hole means an enlargement in a trench of such dimensions that, when a pipe is against the side or bottom of the trench, there is adequate space for any person required to be between the pipe and the side or bottom of the enlargement;
bell hole. A Hole dug to allow room for workmen to make a connection or repair in buried pipe. Any hole other than a continuous trench, opened for working on or installing a buried facility.