Abbreviation of ホームルーム (hōmurūmu).

(honorific) notice, notification, news

(education) time in the schoolday during which the homeroom teacher can guide and manage students

an elder / a scholar / a teacher or a professor / sensei (Japanese martial arts teacher) / sir, a polite form of address to teachers, doctors, etc.

a title used after the name of teachers, doctors, lawyers, or certain other professionals

(dialect, Hakata) teacher, professor

important, significant

importance, consequence, significance

importance

teachers / doctors