「Threads」and「spread stance with unseen, death」as FISHNETS, especially trawling fishnets, normally are made from thin ropes as netting (「threads」) and have thick ropes tied to the periphery for hauling them in.「Unseen, death」meaning a net used for trapping and sometimes killing, such as a gillnet or in a「dragnet」and to emphasize that a net functions most effectively when it remains「unseen」by the intended prey…this sort of explanation reminds one of fishnet stockings.
　The sages were indeed visionaries, combining「ejaculation spurts unseen in spread legs」to describe the WorldWideWeb, or InterNET and the plethora of edited digital imagery (「penile emissions and deception, liar」)…you've really gotta admire the depth of understanding these guys had, despite all their unabashed glyphs [that was sarcasm, Claude—did you note the use of "really gotta"?].
　Nevertheless, while it would seem that the sages were clairvoyant, actually the glyph elements are for a slightly different reason: formerly「ejaculations in net of death unseen」and referring to a FISHNET other than the content of a woman's stockings perhaps, due to it being one cause that triggers male fish ejaculations. A fishnet naturally causes many fish to be drawn into close proximity to one another, particularly as the net closes. The triggering mechanism for male fish ejaculation, unlike most human males but similar to many human male passengers with a preference for using a crowded train system, is the proximity to the eggs of a female, any female—she may have even already departed (as in「no basis for ejaculation」), but if her pheromones linger,…pishshsheeeeew!. Close proximity, even for a few moments, causes male fish to blast their wad into the surrounding waters. At least, netted male fish die with a smile, if not with their boots on.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: net; network
Japanese: net, netting, web, network, area fill, half-tone dot meshing
Unihan extended: net, web; network
EDRDG: netting; network

Used within names (nanori)
あ　･　ずな