Vocabulary What does 鋭角 (えいかく, eikaku) mean? 鋭角 (えいかく, eikaku) means acute angle. Quick factsReadingえいかくRomajieikakuPart of speechnoun 鋭角えいかくeikakuacute angle1noun acute angleKanji in this word鋭sharp, keen角corner, angle; horn