Adverbial has 3 senses

• sideway(r = adv.all) sideways, sidewise - with one side forward or to the front; "crabs seeming to walk sidewise"; "turned sideways to show the profile"
• sideway(r = adv.all) sideways, sidewise - from the side; obliquely; "a picture lit sideways"; "scenes viewed sidewise"
• sideway(r = adv.all) sideways, sidewise - toward one side; "a figure moving sidewise in the shadows"; "leaning sideways"; "the car slipped sideways into the ditch"