succubus
Cross references: 1. incubus suc.cu.bus \-b*s\ \-.bi-, -.be-\ n or suc.cu.bi [ME, fr. ML, alter. of LL succuba prostitute, fr. L succubare to li] pl e under, fr. sub- + cubare to lie, recline - more at HIP : a demon assuming female form to have sexual intercourse with men in thei r sleep