Wiktionary
blue prints
n. (blue print English)
Usage examples of "blue prints".
There must be no mistake this time as there was when we were working for Japan and almost had the blue prints of Corregidor at Manila only to lose them on the streets of Calcutta.
White prints were themost recent, blue prints were older and somehow more in-tricate, with maplike traceries on them, and black printsdated from the night.
You can't tell a left-handed monkey wrench from a reaction engine, yet you ask me for blue prints of a space ship.
At the table, littered with blue prints and drawings and colored plates of famous home interiors, was the director.