about

The word about is a preposition that indicates an approximate location, direction, or reference to something. It can also imply a sense of being near to, or in the vicinity of, an object or concept.

• The cat is hiding about the garden. — 猫は庭の周りに隠れています。
• The meeting will start about 3 PM. — 会議は午後3時ごろに始まります。

About is also used as an adverb that means approximately or nearly. It suggests a rough estimation rather than an exact figure or time.

• There were about ten people at the event. — イベントには約10人がいました。
• She arrived about an hour late. — 彼女は約1時間遅れて到着しました。