hyblyn

== Welsh == === Etymology === From hẁb (“boost, bush, thrust”) +‎ llyn (“drink; spirit”) under the influence of brechlyn (“vaccine”). === Pronunciation === (North Wales) IPA(key): /ˈhəbɬɨ̞n/ (South Wales) IPA(key): /ˈhəbɬɪn/ === Noun === hyblyn m (plural hyblynnau, not mutable) (immunology) booster Synonyms: brechlyn atgyfnerthu, dos atgyfnerthu, pigiad atgyfnerthu