13-letter words containing a, n, o, b, i, d
- warping board — a rectangular board containing evenly spaced pegs at each end on which the warp is wound in preparation for weaving.
- waterboarding — a harsh interrogation technique in which water is poured onto the face and head of the immobilized victim so as to induce a fear of drowning.
- wolffian body — the mesonephros.