From Longman Dictionary of Contemporary Englishcrosswisecross‧wise /ˈkrɒsˌwaɪz $ ˈkrɒːs-/ adverb 1 CROSSfrom one corner of something to the opposite corner Halve the potatoes crosswise.2 CFtwo things that are placed crosswise are arranged to form the shape of an ‘x’
Examples from the Corpus
crosswise• If it is cut crosswise, across the bias of the cloth, which gives fluidity and firmness it will hang straight.• Cut eight or nine slices crosswise from each half, about the thickness of two pennies.• Put each half flat side down and cut crosswise into half-moon slices the same thickness as the onion slices. 