TALL › having a large distance from the bottom to the top: a high building/mountain
ABOVE GROUND › a large distance above the ground or the level of the sea: a high shelf/window The village was high up in the mountains.
MEASUREMENT › used to say how big the distance is from the top of something to the bottom, or how far above the ground something is: How high is it? It's ten metres high.
AMOUNT › great in amount, size, or level: a high temperature high prices/costs The car sped away at high speed.
VERY GOOD › very good: high standards/quality
IMPORTANT › important, powerful, or at the top level of something: a high rank Safety is our highest priority.
DRUGS › If someone is high, they are behaving in an unusual way because they have taken an illegal drug: The whole band seemed to be high on heroin.
SOUND › A high sound or note is near the top of the set of sounds that people can hear.
high in sth › If a food is high in something, it contains a lot of it: Avoid foods that are high in salt.