A person who is very focused on a specific subject, often computers or technology, and may not be interested in typical social activities.
The kids at school used to call him a geek because he liked to spend his time on his computer.
彼がコンピュータで時間を過ごすことを好むので、学校の子供たちは彼をギークと呼んでいました。
A person who is very knowledgeable and passionate about a specific subject, often to the point of being an expert.
She's such a math geek, she can solve any problem you give her.
彼女は数学のギークで、与えられたどんな問題も解決できます。
To be very enthusiastic and focused on a specific subject, often to the point of being an expert.
They geeked out over the new video game for hours, discussing every detail.
彼らは新しいビデオゲームに夢中になり、数時間かけてすべての詳細について語りました。
To talk or think about a specific subject with great excitement and interest, often to the point of being an expert.
We spent the whole night geeking about the new scientific discoveries.
私たちは新しい科学の発見について一晩中熱心に語りました。