blue print ( synonym found)
Definition of blue print:

°alternative spelling of blueprint.
"1928: Men who can read blue prints are at a premium everywhere in this six billion dollar field. (Ad in Popular Science, March 1928)"
Definition of blue print:

°alternative spelling of blueprint.
"1928: Men who can read blue prints are at a premium everywhere in this six billion dollar field. (Ad in Popular Science, March 1928)"
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