white soil used as a pigment

unapplied, undecorated; also the object that is unapplied or undecorated / honest, serious; also the person who is honest or serious

white / undyed, unpainted, unseasoned, etc. / pure / innocent / normal, unspecial

white tea

white flag; truce flag; surrender flag

(literary) a sharp sword; a naked sword

maegashira

investigate, inspect

a river with clear water / an area with small pebbles or sand spread out evenly, such as in a rock garden (from the visual similarity to a clear body of water)

ice needle