15-letter words containing a, c, h, i, n, k
- sympathetic ink — a fluid for producing writing that is invisible until brought out by heat, chemicals, etc.; invisible ink.
- talking machine — Older Use. a phonograph.
- tidal benchmark — a benchmark used as a reference for tidal observations.
- unchristianlike — not like a Christian; not in accordance with Christian teaching and values
- universal chuck — a chuck, as on a lathe headstock, having three stepped jaws moving simultaneously for precise centering of a workpiece of any of a wide range of sizes.
- walking catfish — an Asian catfish, Clarias batrachus, that can survive out of water and move overland from one body of water to another: introduced into Florida.
- what's cooking? — what's happening?