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Hg symbol of the chemical element mercury.
HI an abbreviation for Hawaii.
hi (informal) "Hello!"
hibernate to sleep through the winter in a den or burrow to save energy. Bears, snakes, and certain other animals hibernate.
hiccup a sudden uncontrolled taking in of breath that is also stopped very quickly. A squeaking sound is often produced along with it. A hiccup is caused when the muscles used to breathe tighten up. [3 definitions]
hickory a tree of the walnut family, found mostly in North America. The hickory has nuts that can be eaten and wood that is hard and useful. [2 definitions]
hid past tense and a past participle of hide.
hidden placed out of sight; kept from view or from knowledge.
hide1 to put or hold out of sight; keep from view. [3 definitions]
hide2 the skin of one of the larger animals such as a buffalo or cow.
hide-and-seek a children's game in which one player tries to find the others, who are hiding.
hideous looking very ugly or frightening; disgusting.
hideout a place where a person can hide from the police or other people.
hieroglyphic having to do with writing that uses pictures and symbols to stand for words or sounds. [2 definitions]
high reaching up a great distance; tall. [8 definitions]
high jump a contest in which each person jumps over a bar which is raised after each successful jump.
highland land that is higher than the area around it. [2 definitions]
highly in a way that shows praise or respect. [3 definitions]
highness (capital) a title of honor used when speaking to or about a royal person. (usually preceded by "His", "Her", or "Your").
high-rise a tall building that has many stories.
high school a school that begins with grades nine or ten and ends with grade twelve.