n.
1.English scientist who formulated the law of elasticity and proposed a wave theory of light and formulated a theory of planetary motion and proposed the inverse square law of gravitational attraction and discovered the cellular structure of cork and introduced the term `cell' into biology and invented a balance spring for watches (1635-1703)
Idiom of the Day
run afoul of (someone or something)
to get into trouble with someone or something
The young man ran afoul of the law and got into much trouble.