noun
child's study desk
A desk designed for children, typically with shelves and a lamp, used for homework and studying.
小学生になったら、学習机を買ってもらった。
When I became an elementary school student, I got a study desk.
机 is a general desk or table, while 学習机 specifically refers to a child's study desk with features like shelves and a lamp.
Compound of 学習 (がくしゅう, 'study, learning') and 机 (つくえ, 'desk'). The reading づくえ is a rendaku form of つくえ.