Meaning of SIMPLE in English

SIMPLE

n.

Function: noun

Date: 14th century

1 a : a person of humble birth : COMMONER <thought very little of anybody, simple s or gentry ― Virginia Woolf> b (1) : a rude or credulous person : IGNORAMUS (2) : a mentally retarded person

2 a : a medicinal plant b : a vegetable drug having only one ingredient

3 : one component of a complex specifically : an unanalyzable constituent

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.