Englishfor English speakers
utility
Noun
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Utilities are the basic services that come to your house, such as electricity, phone, and water.
The government is raising prices on drugs, beer and most public utilities.
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A utility is a basic computer program that handles things like copying disks and setting up printers.
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Something's utility is how useful it is.
The design was to maximise the utility of the book as a whole.
tree
Noun
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A tree is a tall plant of wood.
I'm going to climb a tree.
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A tree is a map of ideas that looks like the plant.
My family tree shows how I am related to all my family members.
tree
Verb
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(uncommon) If you tree something, you chase it up into a tree.