Dictionary.net

To hew less than is usual or proper; specifically, to hew, as a piece of timber which should be square, in such a manner that it appears to contain a greater number of cubic feet than it really does contain.

To hew less than is usual or proper; specifically, to hew, as a piece of timber which should be square, in such a manner that it appears to contain a greater number of cubic feet than it really does contain.

un-d[.e]r-h[=u]', v.t. to hew less than is proper, esp. to hew unfairly timber which should be square, so that it appears to contain more cubic feet than it really does.