in ‧ cu ‧ bus /ˈɪŋkjəbəs, ˈɪŋkjʊbəs/ BrE AmE noun ( plural incubuses or incubi /-baɪ/) [countable]
[ Date: 1300-1400 ; Language: Late Latin ; Origin: Latin incubare ; ⇨ ↑ incubate ]
1 . someone or something that causes a lot of worries or problems:
Joyce regarded his US citizenship as a moral and political incubus.
2 . a male ↑ devil that in the past was believed to have sex with a sleeping woman ⇨ ↑ succubus