thread (n.) 1Old English
þræd "fine cord, especially when twisted" (related to
þrawan "to twist"), from Proto-Germanic
*thredu- "twisted yarn" (source also of Old Saxon
thrad, Old Frisian
thred, Middle Dutch
draet, Dutch
draad, Old High German
drat, German
Draht, Old Norse
þraðr), literally "twisted," from suffixed form of PIE root
*tere- (1) "to rub, turn." Meaning "spiral ridge of a screw" is from 1670s.
Threads, slang for "clothes" is 1926, American English.
threaded (a.) 21. Having threads.
2. Arranged in a thread.
threading (n.) 3The act or process by which something is threaded (in various senses).
thread necromancy (n.) 4On an Internet forum, the act of posting in a thread that is already considered dead or/and out of discussion.