博士: a doctor, that is, someone with a Ph.D. / 白紙: white paper, blank paper / 薄志: weak-willed / 薄志: a small token of appreciation

歯糞, 歯屎, 歯クソ: (colloquial) dental plaque

(formal) Female third-person singular pronoun; she, her, girlfriend

(colloquial) a girlfriend (a female partner in a romantic relationship)

(literary) they (about women or girls)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

spur

gain, win fame, a reputation, etc.