垂直尾翼 chuízhíwěiyì tailfin Origin Definitions Defs Strokes Stroke Words Sentences Sents 垂直 chuízhí adjectiveadverb perpendicular vertical; to be perpendicular, intersecting at a right angle尾翼 wěiyì tail unit The tailpiece or empennage of an aircraft; also refers to the fletching of an arrow, fins on a missile, or a rear spoiler on a car