venetian blind

今日の単語も小説WILDERNESSからです。
They leaned against the seawall and looked at Karl's house. On the ocean side there was a sunporch, the windows closed by venetian blind. Above the sunporch the house rose two more stories.
"venetian blind" は日本語では単にブラインドといっている物とは違うのでしょうか？
・Collins Dictionary: a window blind consisting of a number of horizontal slats whose angle may be altered to let in more or less light
・Merriam-Webster's Online Dictionary: a covering for a window made of strips of wood, plastic, or metal that can be turned to block out or let in light
・Dictionary.com: a blind, as for a window, having overlapping horizontal slats that may be opened or closed, especially one in which the slats may be raised and drawn together above the window by pulling a cord.
Wikipediaで "venetian blind" を調べようとしたら　"Window blind" の項に転送され、 "venetian blind" が　"Window blind" の一種であることが分かります。 Wikipediaにあった説明の一部を次に引用します。
A window blind is also known as a window shade
. ...
In the late 19th and early 20th centuries, Venetian blinds were widely adopted in office buildings to regulate light and air.
プラスティック製でなければ、ブラインドというより "venetian blind" と言った方が情緒がありますね。もっともプラスティック製以外のブラインドは見た事がありませんが。