Century Dictionary and Cyclopedia
- n. A pipe laid at the level of the bottom of a canal for letting off the water.
- n. a pipe to drain or let off water
GNU Webster's 1913
- n. A pipe to let off water.
- From off- + let (Wiktionary)
“First, the water might be run off by a descending pipe, if an offlet could be got at the depth of thirty-five or thirty-six feet, and any air might be extracted by a small pump.”
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