It forms all or part of: Anselm apocalypse Brussels caliology Calypso calyx ceiling cell cellar cellular cellulite cellulitis cilia clandestine cojones coleoptera color conceal eucalyptus hall hell helm (n.2) 'a helmet ' helmet hold (n.2) 'space in a ship below the lower deck ' hole hollow holster housing (n.2) 'ornamental covering ' hull (n.1) 'seed covering ' kil- kleptomania occult rathskeller supercilious Valhalla William. Proto-Indo-European root meaning 'to cover, conceal, save.'