tenmoku means A dark glaze with a surface that resembles oil spotting, made of feldspar, limestone, and iron oxide. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
tenmoku is pronounced /ˈtɛməku/.
Why “tenmoku” is a great word
TENMOKU — [Noun] A dark, iron-rich ceramic glaze prized for a lustrous surface that can bloom with metallic iridescence, fine "oil spot" crystallization, or a starry speckle. Borrowed from Japanese 天目 (tenmoku), itself derived from the name of Tianmu Mountain (天目山, Mandarin: Tiānmù Shān, 'Heaven's Eye Mountain') in China, where Japanese Buddhist monks acquired tea bowls with this glaze during the Song dynasty. Unlike "celadon," with its serene, translucent sea-green, or the specific "Jian Zhan," which names the original Chinese ware, *tenmoku* is the term for that profound, opaque black—a darkness that holds light like still water holds a star. It is the captured sheen of a raven's wing, the silent bloom in a pool of spilled ink, or the visual paradox of a surface like pooled night shot through with constellations of silver. A humble vessel containing not just tea, but a fragment of swallowed cosmos.
Etymology
Borrowed from Japanese 天目.
noun
- A dark glaze with a surface that resembles oil spotting, made of feldspar, limestone, and iron oxide.“Tenmokus are usually dark brown and black with some rust patches, but occasionally they are yellow. green or purple. Good tenmokus have an expressive depth and variation of colour.”