noun

• (usually in the plural) Something that a person dislikes (has or feels aversion to).
  "Tell me your likes and dislikes."
• (Internet) An individual vote showing disapproval of, or lack of support for, something posted on the Internet.

verb

• (obsolete, transitive) To displease; to offend. In third-person only.
  "customes and conceipts differing from mine, doe not so much dislike [translating desplaisent] me, as instruct me[…]."
• (transitive) To have a feeling of aversion or antipathy towards; not to like.
  "In the thick of the railway controversies of his day, Francis naturally had his prejudices. It seems that he cordially disliked the aristocracy in general."
• (Internet) To leave a vote to show disapproval of, or lack of support for, something posted on the Internet.
  "Rebecca Black's "Friday" video has gained notoriety for being one of the most disliked videos in YouTube history."