15-letter words containing a, b, y, s, o
- radio sono-buoy — a buoy equipped to detect underwater noises and transmit them by radio
- rayside-balfour — a town in S Ontario, in S Canada.
- say one's beads — to pray with a rosary
- soapbox oratory — public speaking typical of soapbox orators
- social mobility — mobility (def 2).
- spanish bayonet — any of certain plants belonging to the genus Yucca, of the agave family, having narrow, spine-tipped leaves and a cluster of white flowers.
- storage battery — a voltaic battery consisting of two or more storage cells.
- strawberry roan — a horse with a reddish coat that is liberally flecked with white hairs.
- strephosymbolia — a condition of perceiving objects as their mirror image and, specifically, having difficulty in distinguishing letters in words
- subperiosteally — the normal investment of bone, consisting of a dense, fibrous outer layer, to which muscles attach, and a more delicate, inner layer capable of forming bone.
- subsidiary coin — a coin, especially one made of silver, having a value less than that of the monetary unit.
- substitutionary — a person or thing acting or serving in place of another.
- susan b anthony — Antony, Mark.
- swing both ways — to enjoy sexual partners of both sexes
- syllabification — to form or divide into syllables.
- symbol retailer — any member of a voluntary group of independent retailers, often using a common name or symbol, formed to obtain better prices from wholesalers or manufacturers in competition with supermarket chains
- urban sociology — the sociological study of cities and their role in the development of society.