Combined from ノ [ノ] + One [一] + Hook [亅] + Two [二] + Mouth [口] + Two hands [廾] + Stone / Rock [石] + ｜ [｜] to compose 研: represents "polish".
to study, to train, to intern
to study, to research
to sharpen, to grind, to scour, to hone, to polish, to wash (rice)
training
research
study room, laboratory
