"konkav"@de . "مقعّر"@ar . "Concave"@en . "Concavo"@it . "Concave"@fr . . . . "مجوّف"@ar . . "مقعّر"@ar . . "Concave"@en . . "Hollowed riser"@en . . "Évidé"@fr . . "Concavo"@it . . "gekehlt"@de . . "http://archwort.dainst.org/thesaurus/de/vocab/?tema=7753"@de .