'Slantwise' definitions:

Definition of 'slantwise'

adverb

At a slant; moving or directed in a slantwise position or direction [syn: slantwise, slantways]

From: GCIDE

Slantwise \Slant"wise`\, Slantly \Slant"ly\, adv. In an inclined direction; obliquely; slopingly. [1913 Webster]