threshold

'threshold' in Webster

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In depth article on threshold found in wikipedia.


Thresh"old   (?), n. [OE.
threswold, &thorn;reshwold, AS. &thorn;rescwald, &thorn;erscwald, &thorn;erscold, &thorn;rescold, fr. &thorn;rescan, &thorn;erscan, to thresh; akin to Icel. &thorn;reskjöde, &thorn;röskuldr, Sw. tröskel, Dan. t&aelig;rskel. See Thrash.]
 1. The plank, stone, or piece of timber, which lies under a door,
especially of a dwelling house, church, temple, or the like; the
doorsill; hence, entrance; gate; door.
 2. Fig.: The place or point of entering or beginning, entrance; outset; as, the threshold of life.

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