portakabin/ˈpɔːtəkabɪn/EtymologyTrademark, from porta- + a variant of cabin.portakabin means A type of mobile building. Lexicurio rates it Sui generis — a strength score of 89 out of 100.nounA type of mobile building.“In this case study the topic for discussion was the reduction of car parking spaces due to the erection of a Portakabin for contract workers.”