hafgwsg

== Welsh == === Etymology === haf (“summer”) +‎ cwsg (“sleep”) === Pronunciation === IPA(key): /ˈhavɡʊsɡ/, [ˈhavɡʊsk] === Noun === hafgwsg m (plural hafgysgau, not mutable) (biology) estivation ==== Coordinate terms ==== gaeafgwsg (“hibernation”) ==== Derived terms ==== hafgysgu (“to estivate”) === Mutation === === Further reading === Griffiths, Bruce; Glyn Jones, Dafydd (1995), “aestivation”, in Geiriadur yr Academi: The Welsh Academy English–Welsh Dictionary‎[1], Cardiff: University of Wales Press, →ISBN