Foeniculum vulgare foe·ni·cu·lumvulgare uncommon noun 1. strongly aromatic with a smell of aniseed; leaves and seeds used for seasoning Synonymscommon fennelFoeniculum vulgare Related words Word family Foeniculum vulgare dulce Broader terms fennel Part of fennelfennel seed WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.