From Longman Dictionary of Contemporary Englishlandlubberland‧lub‧ber /ˈlændˌlʌbə $ -ər/ noun [countable] old-fashioned  EXPERIENCEsomeone who does not have much experience of the sea or shipsOrigin landlubber (1700-1800) land + lubber “large awkward person” ((14-21 centuries)) 
                                                    
                                                
