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1) [line 18] PASEI BIRA'OS
(b) If a well is four by four Tefachim wide and ten Tefachim deep, it is considered to be a Reshus ha'Yachid. If it is located in middle of Reshus ha'Rabim, one may not draw water from the well (= Reshus ha'Yachid) and set the bucket down at the edge of the pit (= Reshus ha'Rabim) for an animal to drink. One may only drink from the well by climbing *into* the well, and drinking its water while in the well.
(c) By placing four corner pieces around the well (each made of two planks one Amah wide and ten Tefachim tall, set perpendicular to each other), the area enclosed by the planks is considered to be a 4-walled Reshus ha'Yachid and the open space between them is considered a "doorway" in a full wall. It is therefore permitted for a person to set a bucket of water drawn from the well at a point enclosed by the planks, and bring his animal (or most of it) within that area to drink from the water.
(d) The corner pieces were placed 10 Amos apart according to Rebbi Meir and 13 1/3 Amos apart according to Rebbi Yehudah. To enclose an area larger than 10 or 13 1/3 Amos, extra planks must be added between the corner pieces to shorten the gaps between them.
2) [line 25] PISCHEI SHIMA'EI - (a) desolate entryways (*Shomemim*) (RASHI); (b) ruined entryways, i.e. lacking the necessary components (RASHI); (c) the entryways of Eretz Yisrael, which is called the land of the sons of *Shem* (RABEINU CHANANEL)
3) [line 27] SHAKAFEI - posts. Stones are missing from the walls at the sides of the entryway to the extent that the door-posts do not form a straight vertical line
4) [line 28] TIKRAH - (lit. ceiling) lintel
6) [line 30] KUNDISIN - poles
8) [line 1] PEI'AH - braided vines which are strung between poles (at the top) to form a Tzuras ha'Pesach (see Background to Eruvin 6:7)
9) [line 14] KANIN HA'DOKRANIN - spiked poles that are stuck into the ground standing up
10) [line 18] KASHIN - straw
14) [line 24] SHAM'EI - his attendant
16) [line 25] CHAVSHUHU - they locked him up in prison
18) [line 27] KIPAH - an archway
20) [line 31] CHOKEKIN L'HASHLIM
(b) For example, the Gemara records an argument between Rebbi Meir and Chachamim as to whether we apply Chokekin l'Hashlim in a situation where an archway's opening is too small to require a Mezuzah (i.e., it is not four Tefachim wide for a height of ten Tefachim), but the walls surrounding the archway are thick. If they are thick enough that had they been excavated, the doorway could be made 4 Tefachim wide for a height of ten Tefachim, Rebbi Meir asserts that the doorway must have a Mezuzah.
(c) Chokekin l'Hashlim is only applied to *part* of an opening, not to the entire opening. For example, in the above situation Rebbi Meir applies Chokekin l'Hashlim only when the lower three Tefachim of the doorway are already four Tefachim wide, but the before it reaches a height of ten Tefachim the doorway gets narrower.. Chokekin can *complete* the doorway by making the top as if it, too, were four Tefachim wide, although it really is less than that.
21) [line 34] LECHAYAYIN - two poles or planks, one on either side of the opening