弓彇 is in several kokugos.

@@ -8,0 +9,4 @@
+</k_ele>
+<k_ele>
+<keb>弓彇</keb>
+<ke_inf>&rK;</ke_inf>

弓弭	548	78.3%
弓筈	152	21.7%

sanoku has a dedicated entry only for ゆはず, but a reference into it from ゆみはず. kanji, unfortunately, is 弓筈. 

https://www.museum.yokosuka.kanagawa.jp/archives/document/5951
弓弭(ゆはず)

https://ja.wikipedia.org/wiki/和弓
弭（はず）
弓の両端にある凸形状の弦をかける部分で、上に来る方を末弭（うらはず）、下に来る方を本弭（もとはず：「元弭」とも書く）と呼ぶ。
To distinguish from 矢の筈----->>>>>>矢の筈（はず）と区別するため、弓弭（ゆはず）とも呼ばれる。

https://kobun.weblio.jp/content/ゆはず
ゆ－はず 【弓筈・弓弭】
◆「ゆみはず」の変化した語。


https://kotobank.jp/word/弭-145322#:~:text=ゆはず【弭】,にしたものは多い。
ブリタニカ国際大百科事典 小項目事典
弭
ゆはず
ゆみはず (弓筈) ともいう. 弓の両端の弦をかける部分

daijs ゆみ‐はず【弓×弭／弓×筈／弓×彇】
https://kotobank.jp/word/弓弭-652140

ゆ‐はず【▽弓×弭／▽弓×筈／▽弓×彇】
「ゆみはず」に同じ。

「はず」は，
http://ppnetwork.seesaa.net/article/450205572.html
ちなみに、同じ『はず』でも『弭』と書いた場合、弓の上下の弦を掛ける部分を指す。この混同を避けるため、筈を矢筈、弭を弓弭（ゆはず）ということもある。」

Reordered kanji and readings. Seen a couple of references indicating that "弓弭" is used primarily to distinguish from the nock/筈 on an arrow(both read はず), and in these cases the reading seems to be ゆはず. (This is the only reading offered on the wikipedia page on Japanese bows 和弓). 

If you image search 弓筈, you'll primarily get the tips of arrows.  Search for 弓弭, and you'll get diagrams of bows.

弭 seems to be a kanji dedicated to the nocks of a bow itself. ("The ears of the bow", neat)

I have proposed new entries for 末弭 and 本弭(which come up in all kinds of diagrams), which reinforce that はず in the context of "tip of a bow" is more likely to be 弭 than 筈.  (even though sankoku does not mention 弭, this strikes me as an effort to simplify-out generally-rare kanji).

Pronunciation is a little harder to reason about. sankoku prefers ゆはず.  I have dug up some references that give ゆはず.  Seems like ゆみはず is the reading you'd just guess if you hadn't learned the term.

@@ -4,0 +5,3 @@
+<keb>弓弭</keb>
+</k_ele>
+<k_ele>
@@ -7,3 +10,3 @@
-<k_ele>
-<keb>弓弭</keb>
-</k_ele>
+<r_ele>
+<reb>ゆはず</reb>
+</r_ele>
@@ -13,3 +15,0 @@
-<r_ele>
-<reb>ゆはず</reb>
-</r_ele>
@@ -17,0 +18 @@
+<xref type="see" seq="1476430">弭・2</xref>

Entry created