muricide（n.）
1650s, a term of abuse, apparently literally "mouse-killer," from Latin muricidus "a coward, poltroon," from murinus "of a mouse" (from mus "mouse;" see mouse (n.)) + -cidere, combining form of caedere "to strike down (see -cide). Blount (1650s) suggests the notion is "a Coward or sloathful fellow, fitter to kill Mice then men."
该词起源时间：1650年代