the world > space > shape > unevenness > projection or prominence > sharp unevenness > [adverb] > like a tusk or spike
tuskwise1844
spikily1893
1844 E. B. BarrettDrama of Exile in Poems I. 93 Ye would perish,—beast by beast Devouring; tree by tree, with strangling roots And trunks set tuskwise.