strand of silk
紽 centers on a single strand or thread of silk. It refers to a fine, individual filament of silk, distinct from a woven fabric or a thicker cord.
紽 combines 糸 (silk) with 它, which likely contributes the sound. The character is used for a strand of silk, but the exact historical development of 它 in this context is uncertain.
The left side 糸 is silk thread. The right side 它 looks like a coiled snake, but here imagine a single strand of silk being pulled from a cocoon, forming a delicate thread.
For タ, picture a single strand of silk being stretched taut: taut -> タ, and the thread is pulled tight.
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