Psycho
(1960) a US horror film (=a film that is intended to make you feel frightened) made by Alfred Hitchcock. Its most famous scene is the one in which the character acted by Janet Leigh is killed with a knife by Norman Bates while she is in the shower.

[TahlilGaran] Dictionary of Contemporary English ▲

psy‧cho /ˈsaɪkəʊ $ -koʊ/ noun (plural psychos) [countable]
[Date: 1900-2000; Origin: psychopath]
informal someone who is mentally ill and who may behave in a violent or strange way
—psycho adjective

[TahlilGaran] Dictionary of Contemporary English ▲

psycho- /saɪkəʊ, -kə $ -koʊ, -kə/ (also psych-) prefix technical
[Language: Greek; Origin: psyche; ⇒ psyche]
relating to the mind and the mental processes, rather than the body:
a psychoanalyst

[TahlilGaran] Dictionary of Contemporary English ▲