valedictorian

n (US) student giving a valedictory 致告别辞的毕业生代表.

vacuum tube (US) (Brit radio valve), vacuum-packed, vade-mecum, vagabond, vagary, vagina, vaginal, vagrancy, vagrant, vague, vaguely, vagueness, vain, vainglorious, vainglory, vainly, vainness, valance, vale, valediction, valedictory, valence, valency, valentine, Valentine's Day, valerian, valet, valetudinarian, valian, valiant, valiantly, valid, validate, validation, validity, valise, Valium, valley, valorous, valour (US valor),