<entry id="2227908" stat="A" corpus="jmdict" type="jmdict">
<ent_corp type="jmdict">jmdict</ent_corp>
<ent_seq>1552970</ent_seq>
<k_ele>
<keb>竜骨</keb>
</k_ele>
<k_ele>
<keb>龍骨</keb>
</k_ele>
<r_ele>
<reb>りゅうこつ</reb>
</r_ele>
<sense>
<pos>&n;</pos>
<gloss>keel (of a ship)</gloss>
</sense>
<info>
<audit time="2023-04-04 19:09:41" stat="A" unap="true">
<upd_name>Stephen Kraus</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>Wikipedia's "keel" article doesn't say anything about aircraft, so gg5's 空 tag seems suspicious</upd_detl>
<upd_refs>saito: The keel (of a ship)
prog: the keel
gg5: 【造船・空】 a [the] keel.

Google N-gram Corpus Counts
╭─ーーーーー─┬────────┬───────╮
│ 竜骨　　　 │ 35,795 │ 78.4% │
│ 龍骨　　　 │  5,884 │ 12.9% │
│ りゅうこつ │  3,991 │  8.7% │
╰─ーーーーー─┴────────┴───────╯</upd_refs>
<upd_diff>@@ -5,0 +6,3 @@
+&lt;/k_ele&gt;
+&lt;k_ele&gt;
+&lt;keb&gt;龍骨&lt;/keb&gt;
@@ -12 +15 @@
-&lt;gloss&gt;keel&lt;/gloss&gt;
+&lt;gloss&gt;keel (of a ship)&lt;/gloss&gt;</upd_diff>
</audit>
<audit time="2023-04-04 20:50:11" stat="A">
<upd_uid>jwb</upd_uid>
<upd_name>Jim Breen</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>Probably applies to flying boats.</upd_detl>
</audit>
</info>
</entry>