whipsaw
noun
a saw for two persons, as a pitsaw, used to divide timbers lengthwise.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The steamer Grahame was built at Chipewyan of whipsawn lumber, and much of her steel and ironwork was wrought on Wyllie's forge.
From The New North by Agnes Deans Cameron