A variant or informal name; in some contexts, a mat or carpet used in martial arts or exercise.
This word has unclear etymology in English. It may be a borrowed word from Finnish or other languages where it refers to 'matte' surfaces or grounds. Without clear historical documentation, its origin remains uncertain in standard English dictionaries.
If you're thinking of martial arts mats, 'matti' appears in some European languages meaning 'matte' or 'dull'—opposite of shiny. The connection makes sense: tatami mats in Japanese martial arts create that non-reflective, gripped surface perfect for safety.
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