Barbara F. Kawakami, Japanese Immigrant Clothing in Hawaii 1885-1941 
(Honolulu, University of Hawaii Press, 1993), pp.182-183:

"When the kimono shroud was completed, the body of the deceased was 
carefully dressed with the right front overlapping the left front, which is 
known as the hidarimae manner. (Normally, a kimono is worn with the left 
front panel overlapping the right front panel.) In ancient times the Japanese 
had worn their kimono the hidarimae way. But this custom began to change in 
the seventh century, when Chinese court costumes were introduced. Because 
the Chinese wore their costumes overlapped in the opposite direction, there 
was a period of confusion: some Japanese held to the old way; some  adopted 
the Chinese way. Finally, in the eighth century, Emperor Gensho (715-723) 
instituted a dress code that required the Japanese to wear their kimono with 
the left front over the right. After that, wearing a kimono hidarimae was 
avoided in Japan; it was considered an omen of misfortune or even death. The 
issei immigrants to Hawaii of course brought these beliefs with them. Issei 
mothers would reprimand their children for inadvertently wearing their 
bedtime kimono overlapped the wrong way, and mothers would become 
especially upset if their daughters wore their kimono in the hidarimae manner 
on New Year’s Day, since that might mean that the whole year would be 
unlucky. A plantation mother might say, “You wearing make man style?” 
(Make means dead in Hawaiian.) To this day, when issei women see people of 
other ethnic groups at Obon dances or teahouse parties wearing kimono the 
hidarimae way, they have the same reaction: they feel it is a bad omen. The 
younger-generation Japanese probably do not even notice."

http://books.google.com/books?
id=3sAFvVIfwcIC&pg=PA183&lpg=PA183&dq=hidarimae&source=bl&ots=U0
94ODY-
CY&sig=_89H4M6zRxSx_UuxTYf4SW26PUk&hl=en&sa=X&ei=OuFNUfCbNcvry
AHzs4HoAg&ved=0CF4Q6AEwCg#v=snippet&q=hidarimae&f=false

Definition #2 is incorrect. It reads "right side tucked under the left" but it should 
read "left side tucked under the right."

@@ -21,1 +21,1 @@
-<gloss>wearing a kimono with the right side tucked under the left (from someone else's POV; normally used only for the dead)</gloss>
+<gloss>wearing a kimono with the left side tucked under the right (from someone else's POV; normally used only for the dead)</gloss>

daijr/s, prog, Luminous, 新和英中辞典

Prog and Luminous say right side over left, which makes it seem odd that it's 左前. 新和英中辞典 says right side under left, with an explanation that it's from someone else's POV (daijs also mentions this).

@@ -21,1 +21,1 @@
-<gloss>wearing a kimono with the right side tucked under the left (normally used only for the dead)</gloss>
+<gloss>wearing a kimono with the right side tucked under the left (from someone else's POV; normally used only for the dead)</gloss>

@@ -21,2 +21,1 @@
-<gloss>wearing a kimono with the right side tucked under the left</gloss>
-<gloss g_type="expl">this is normally used only for the dead</gloss>
+<gloss>wearing a kimono with the right side tucked under the left (normally used only for the dead)</gloss>

gg5 koj daij

@@ -16,2 +16,5 @@
-<gloss>downward course</gloss>
-<gloss>being badly off</gloss>
+<gloss>going badly (one's business, one's fortune, the economy)</gloss>
+<gloss>being in a bad financial situation</gloss>
+</sense>
+<sense>
+<pos>&n;</pos>
@@ -19,0 +22,1 @@
+<gloss g_type="expl">this is normally used only for the dead</gloss>