Kyūjitai form of 動力学: dynamics

good or tireless walker

(Japanese folklore) Shapeshifting monster, 妖怪 (yōkai), which for a ruse takes the form of either a helpless baby or tiny old man, crying near woodland trails and crushes passersby who stop to help as it transforms to devour them.

dog-ear (folded corner of a page in a book)