7-letter words containing a, b, o, i
- vibrato — a pulsating effect, produced in singing by the rapid reiteration of emphasis on a tone, and on bowed instruments by a rapid change of pitch corresponding to the vocal tremolo.
- zamboni — a tractorlike machine used on an ice skating rink to smooth the ice
- zenobia — (Septimia Bathzabbai) died after a.d. 272, queen of Palmyra in Syria a.d. 267–272.
- zigaboo — (offensive, ethnic slur) Alternative form of jigaboo.