What is the meaning of sidelong?

adjective

• Used especially of glances. ( directed to one side with or as if with doubt or suspicion or envy)
  • usage: "her eyes with their misted askance look- Elizabeth Bowen; "sidelong glances"
  • synonyms: askance, askant, asquint, squint, squint-eyed, squinty
• Situated at or extending to the side."the lateral branches of a tree"; "shot out sidelong boughs- Tennyson
  • synonyms: lateral
• Inclining or directed to one side. "moved downward in a sidelong way" - Bram Stoker

adverb

• On the side.
  • usage: "the plow lay sidelong on the ground"
• With the side toward someone or something. "seated sidelong to the window- Nathaniel Hawthorne
• To, toward or at one side.
  • usage: "darting eyes looking sidelong out of a wizened face"
  • synonyms: sideways, obliquely