Meaning

noun baked dish of layers of lasagna pasta with sauce and cheese and meat or vegetables

noun very wide flat strips of pasta

originFrom Italian lasagna (and its plural lasagne), possibly from Vulgar Latin *lasania, from Latin lasanum (“cooking pot”), from Ancient Greek λάσανον (lásanon, “trivet or stand for a pot”). Others argue the Italian lasagna originally derived from the Arabic لَوْزِينَج (lawzīnaj, “almond cake”).

Etymology from Wiktionary, CC BY-SA 3.0