pasteboard

Etymology

paste + board

noun

1. (usually uncountable) Card stock.
   All visible objects, man, are but as pasteboard masks. 1851, Herman Melville, Moby Dick
   He handed Larry two slips of pasteboard, theater tickets, as was evident at first glance. 1912, Howard Roger Garis, Larry Dexter and the Stolen Boy
   To many, a railway ticket is but an uninteresting bit of pasteboard, which must be purchased before a journey is undertaken, and once obtained, may be stowed away in a convenient pocket and forgotten, until a watchful railway official requests its production. 1939 November, R. S. Tayler, “A Railway Journey”, in Railway Magazine, page 336
2. (computing, countable) A widget allowing multiple users to paste and share text or other items.
3. (slang, obsolete) A person's visiting card.
   […] he no sooner learnt that the British officer in command had sent in his pasteboard, than he instantly returned the visit […] 1860, William Johnson Neale, Paul Periwinkle: Or, The Pressgang, page 18
   Peter called on the Pierces, only to find them out, and as no notice was taken of his pasteboard, he drew his own inference, and did not repeat the visit. 1894, Paul Leicester Ford, The Honorable Peter Stirling and What People Thought of Him, page 47

adj

1. (figurative) unsubstantial; flimsy
   A poor, pasteboard story. The conventional, unattractive heroine is recovering from an illness in Rome. She is discontented and sorry for herself because her planned career as a sports mistress has now to be abandoned. 1955, The Junior Bookshelf, volume 19, page 241