ベリベリベリベリMeanings1nounberiberimedicineMedical term for thiamine (vitamin B1) deficiency disease. Cross-referenced with 脚気 (かっけ), the traditional Japanese term.See also: 脚気ベリベリはビタミンB1の不ふ足そくで起おこる病びょう気きです。Beriberi is a disease caused by a deficiency of vitamin B1.