Sulphur
131sulphur whale — noun : blue whale * * * sulphur whale, = sulphur bottom. (Cf. ↑sulphur bottom) …
132sulphur acids — Acid Ac id, n. 1. A sour substance. [1913 Webster] 2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also… …