the plant Artemisia vulgaris, Old English mugcwyrt, literally "midge wort," from Proto-Germanic *muggiwurti, from *muggjo- "fly" (see midge) + *wurtiz (see wort).
muggle
Muggletonian
muggy
Mughal
mug-shot
mugwort
mugwump
Muhammad
mujahidin
mulatto
mulberry