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Lace card

(Obsolete) A punched card with all holes punched (also called a “whoopee card” or “ventilator card”). Card readers tended to jam when they got to one of these, as the resulting card had too little structural strength to avoid buckling inside the mechanism. Card punches could also jam trying to produce these things owing to power-supply problems. When some practical joker fed a lace card through the reader, you needed to clear the jam with a “card knife” – which you used on the joker first.
[Jargon File]


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  • Lacedaemon

    [las-i-dee-muh n] /ˌlæs ɪˈdi mən/ noun 1. . 2. Classical Mythology. the son of Zeus and Taÿgete and the founder of the city of . /ˌlæsɪˈdiːmən/ noun 1. another name for Sparta, Laconia

  • Lacedaemonian

    [las-i-di-moh-nee-uh n] /ˌlæs ɪ dɪˈmoʊ ni ən/ adjective 1. of or relating to ancient Sparta; Spartan. noun 2. a native or inhabitant of ancient Sparta; a Spartan. /ˌlæsɪdɪˈməʊnɪən/ adjective, noun 1. another word for Spartan adj. 1780, from Latin Lacedaemonius, from Greek Lakedaimonios, from Lakedaimon, an ancient Greek name for Sparta and the district around […]

  • Lace-fern

    [leys-furn] /ˈleɪsˌfɜrn/ noun 1. a small, tufted fern, Cheilanthes gracillima, having dark-brown stalks and fronds about 4 inches (10.2 cm) long.

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