research association; research society / group of enthusiasts (as may be found in schools, colleges, etc)

meeting, gathering / society, association, club

one member of a group

a piece of research, a study, investigation

to research, to study

(chiefly women's speech) first person singular pronoun: I, me

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

(formal) first-person singular pronoun: I, me

personal, private / secret