nail biting

(of pets, animals, etc...) play biting

Same as above.

to force someone to clamp with their teeth, to force into someone's mouth (e.g. a gag) / to wedge into a space / to inflict (a blow), to deal (a hit)

to chew, to digest / to fully appreciate, to fully understand

(literally) To bite one's own navel / (idiomatic) To be deeply regretful about something

医学: medicine, medical science, the study of medicine

下学: elementary learning / 下顎: lower jaw / 化学: chemistry / 科学: science / 家学: hereditary learning / 歌学: poetry

下顎: lower jaw / 寡額: minimum amount set for a fine / 価額: value, amount

雅楽: the ancient court ritual music of Japan, of Chinese and Korean origin