blueprint

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Related to blues: Baby Blues

Blueprint

1. A construction plan. It is called a blueprint because it historically has been printed on blue paper with white lines.

2. In photography, a copy of a periodical printed before final editing in which images are shown on blue paper.

3. Informal, a plan.

blueprint

A detailed set of plans used as a guide for construction.Because of the economies of a very inexpensive method of creating and copying such plans, they were formerly characterized by white lines on blue paper.

References in classic literature ?
'Don't know, Sir,' replied the man; 'afraid we're full, sir--I'll inquire, Sir.' Away he went for that purpose, and presently returned, to ask whether the gentleman were 'Blue.'
The meal was hastily despatched; each of the gentlemen's hats was decorated with an enormous blue favour, made up by the fair hands of Mrs.
We never have used my grandmother's many-colored patchwork quilt, handsome as it is, for we Munchkins do not care for any color other than blue, so it has been packed away in the chest for about a hundred years.
"Is blue the only respectable color, then?" inquired Ojo.
An old, pointed blue hat, that had belonged to some Munchkin, was perched on his head, and the rest of the figure was a blue suit of clothes, worn and faded, which had also been stuffed with straw.
She's up at the flat--she cooked eggs this mornin' in a blue kimono--Lord!
They will not stop in that room; but they may stop in this one for a short time--the other room is blue."
"But there is blue on the outside of every house I have seen," said Bradley.
The merry going to bed would have been the best of all, for Rose wanted someone to cuddle under the blue blanket with her, there to whisper and giggle and tell secrets, as girls delight to do.
Aunt Olivia is pansy-purple mixed with gold, and Uncle Roger is navy blue."
Then, while Billy wandered in a vain search for abalones, Saxon lay and dabbled in the crystal-clear water of a roak-pool, dipping up handfuls of glistening jewels--ground bits of shell and pebble of flashing rose and blue and green and violet.
The night wind tells me secrets Of lotus lilies blue; And hour by hour the willows Shake down the chiming dew.