18-letter words containing n, a, o, f, b
- significant symbol — a verbal or nonverbal gesture, as a word or smile, that has acquired a conventionalized meaning.
- software backplane — (programming, tool) A CASE framework from Atherton.
- sub-classification — to arrange in subclasses.
- the back of beyond — a very remote place
- the bird has flown — the person in question has fled or escaped
- the queen of sheba — a queen of the Sabeans, who visited Solomon (I Kings 10:1–13)
- wingback formation — single wingback formation.