太極
たいきょく
taiji (in Chinese philosophy, the principle that embodies all potential things, incl. time and space)
極太 is read as ごくぶと (gokubuto) and means thick, heavy thread.
ごくぶと
gokubuto
たいきょく
taiji (in Chinese philosophy, the principle that embodies all potential things, incl. time and space)