http://en.wikipedia.org/wiki/Kunai  "... were originally made to be farming tools but soon evolved into the weaponry they have become today."

2007 submission:
(origentry) 苦無 [くない] /(n) Ninja throwing knives/
(headw1)    苦無
(kana1) くない
(pos1)  n
(english1)  Medieval tool for digging, prying etc.
(reference) Web search, for example http://en.wikipedia.org/wiki/Kunai
Mol Serge, Classical Weaponry of Japan (Kodansha 2003)
Hatsumi Masaaki, 戦国忍法図鑑 (新人物往来社 1978)
(comment)   Although probably used as (improvised) weapons, the "ninja weapon" popular image of kunai seems to be mainly due to entertainment pop culture such as the manga/anime series Naruto. Historically, they were simple and rugged multi-purpose tools.
(name)  Jussi Mustonen

@@ -18 +18,2 @@
-<gloss>mediaeval tool for digging, prying, etc.</gloss>
+<s_inf>orig. meaning</s_inf>
+<gloss>mediaeval farming tool for digging, prying, etc.</gloss>

http://ja.wikipedia.org/wiki/くない
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http://www.amazon.co.jp/しのび�
%84-com-18-
%E7%88%86%E7%99%BA%E7%9A%84%E5%A4%A7%E4%BA%BA%E6%B0%97%E5
%95%86%E5%93%81%EF%BC%81%E3%83%8A%E3%83%AB%E3%83%88%E3%81
%A8%E5%85%A8%E3%81%8F%E5%90%8C%E3%81%98%E5%BD%A2%E3%81%AE
-
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_1_16?s=toys&ie=UTF8&qid=1427855446&sr=1-16

any source for the first ref? google images are all of the 
weapon. not in daij etc. (with/without kanji). if "throwing 
knife" is col, isn't the tool as well?

@@ -5,0 +6 @@
+<ke_inf>&ateji;</ke_inf>
@@ -12 +13,2 @@
-<gloss>mediaeval tool for digging, prying, etc.</gloss>
+<misc>&col;</misc>
+<gloss>ninja throwing knives</gloss>
@@ -16,2 +18 @@
-<misc>&col;</misc>
-<gloss>Ninja throwing knives</gloss>
+<gloss>mediaeval tool for digging, prying, etc.</gloss>

Entry created