D defs.my
Entry 1 sense Webster, 1913

Sidewise

/sīd'-wīzˌ/ · Side·wise · IPA /sˈaɪdwˌaɪz/
01 adv. A heavy swinging blow from the side, which disables an adversary.
  1. 1.
    A heavy swinging blow from the side, which disables an adversary.[Slang.]
    “I saw them mask their awful glance Sidewise meek in gossamer lids.” Emerson.