Nantoka/보온boon보온 (boon) is a Korean word meaning “heat insulation; keeping warm”.Meanings1heat insulation2keeping warmPart of speechnounHanja保溫Related words기온air temperature온도temperature보안security보관safekeeping보험insurance보호protection보장guarantee보전preservation보존preservation확보securing체온body temperature온천hot springStudy Korean with flashcards →