corenounmasculine/ˈsɛɾnɨ/mediumcer·nePortuguesEnglishEspanolFrancaisDefinitionThe central and densest part of a tree trunk; the nucleus or essence of something.The core of the wood is more resistant than the outer part.The core of the problem is the lack of communication.synheartessencecenterantsurfaceperipheryexteriorCommon collocationswood corecore of the mattercore issueEtymologyDo latim 'cerne' (cerne, parte interior).Related wordscerneiracerneiro