(bound form) the pith of the rush plant (used as a lampwick)

used in 芯子[xin4 zi5]; Taiwan pr. [xin1]

reactor core

filter cartridge; filter

variant of 燈心|灯心[deng1 xin1]

battery cell

pencil lead; pen refill

core (of a fiber)

fuse; wick; forked tongue (of a snake)

valve stem

Loongson (a family of general-purpose CPUs developed within China)

(textiles) corduroy

see 燈心草|灯心草[deng1 xin1 cao3]

chipset

reactor core

fuel pellets

core diameter (of a fiber)