noun
log; thick piece of wood
Refers to a log or a thick, rough piece of wood, often used in construction or as firewood.
庭に丸太ん棒が転がっている。
A log is lying in the garden.
Compound of 丸太 (まるた, log) + ん (possessive/euphonic particle) + 棒 (ぼう, stick/pole). The exact derivation is uncertain, but it likely emphasizes a thick, log-like stick.