adj

• Physically elevated, extending above a base or average level:
  "the pitch (or: the ball) was high"
• (of an opinion or practice, obsolete outside set phrases) Extreme, excessive; now specifically very traditionalist and conservative.
  "high church High Tory"
• (of a lifestyle) Luxurious; rich.
  "high living, the high life"
• (with on or about) Keen, enthused.
  ""Conversely, just because I am not high on positivity, it does not mean I am necessarily high on negativity.""

noun

• (countable) A high point or position, literally (as, an elevated place; a superior region; a height; the sky; heaven) or figuratively (as, a point of success or achievement; a time when things are at their best, greatest, most numerous, maximum, etc).
  "It was one of the highs of his career."
• (countable) A high point or position, literally (as, an elevated place; a superior region; a height; the sky; heaven) or figuratively (as, a point of success or achievement; a time when things are at their best, greatest, most numerous, maximum, etc).
  "Today's high was 32 °C."
• (countable) A period of euphoria, from excitement or from an intake of drugs.
  "Falling from cloud nine / Crashing from the high / I'm letting go tonight / Yeah, I'm falling from cloud nine"
• (countable) A drug that gives such a high.
  "No sooner has a [synthetic] drug been blacklisted than chemists adjust their recipe and start churning out a subtly different one. These “legal highs” are sold for the few months it takes the authorities to identify and ban them, and then the cycle begins again."

verb

• (obsolete) To rise.
  "The sun higheth."

verb

• (obsolete) Alternative form of hie (“to hasten”).