noun
forked tree; forked branch
Refers to a tree or branch that naturally splits into two or more parts, forming a Y-shape. Used in contexts like climbing, building, or describing natural shapes.
子供たちはまた木に登って遊んでいた。
The children were playing by climbing the forked tree.
そのまた木にロープをかけてブランコを作った。
We hung a rope on that forked branch and made a swing.
また means 'fork' or 'crotch' in general, while また木 specifically refers to a forked tree or branch.
Compound of また (fork) and 木 (tree). The exact historical derivation is uncertain, but the word transparently describes a tree with a forked shape.