n. 白痴, 极端愚蠢

[医] 白痴

[ noun ]
extreme mental retardation
<noun.cognition>

Idiocy \Id"i*o*cy\ ([i^]d"[i^]*[-o]*s[y^]), n. [From idiot; cf.
Gr. ? uncouthness, lack of education, fr. ?. See {Idiot}, and
cf. {Idiotcy}.]
The condition or quality of being an idiot; absence, or
marked deficiency, of sense and intelligence.

I will undertake to convict a man of idiocy, if he can
not see the proof that three angles of a triangle are
equal to two right angles. --F. W.
Robertson.