expression:

• killing three birds with one stone - four character idiom ➜ いっせきにちょう

noun:

• one-way communication - IT term

noun:

• string tied to the chest of one's kimono or haori
• childhood (period where one would wear such a string) - archaism

godan ~む verb:

• to carry on one's back
• to burden oneself (e.g. with debts, responsibilities, etc.)

expression / adverb:

• one more; another; the other ➜ 今一つ【いまひとつ】
• not quite ➜ 今一つ【いまひとつ】
• close run; just falling short of success

noun:

• Buddhist service in which the eight scrolls of the Lotus Sutra are read one scroll at a time (one morning and one evening reading each day for four days with a different reciter each time)

adjectival noun:

• with all one's strength; with all one's might

expression / ichidan verb:

• to close one's eyes; to lower one's eyelids; to shut one's eyes
• to die; to breathe one's last

noun:

• one who perspires freely; great sweater

noun / ~する noun:

• trying one's ability

expression / godan ~る verb:

• to defeat one's enemy

noun / ~する noun:

• going to serve one's lord

noun:

• daimyo's alternating Edo residence; official attendance service (by a daimyo in the Edo era) - abbreviation ➜ 参勤交代

godan ~る verb:

• to fall on one's backside; to be exhausted; to lose strength; to lose one's abilities ➜ へたばる・尻餅

noun:

• one-armed person; one-handed person

noun:

• having only tiles of one suit and not having called any tiles (yaku); having only tiles of one suit and a concealed hand - Mahjong term - From Chinese ➜ メンゼン・清一色

noun:

• staffing a retail outlet with one person - From English "one operation"

noun / ~する noun:

• viewing something in the company of one's superior

noun:

• Pacific white-sided dolphin (Lagenorhynchus obliquidens)

noun:

• twisting of the truth in one's writing; playing with text to distort the truth

expression / ~の noun:

• (in) one's absence

noun:

• staffing a retail outlet with one person - abbreviation ➜ ワンオペレーション

noun:

• setting off the night before one normally would have departed, travelling in a different direction, spending the night there, and leaving for one's destination in the morning (done to avoid travelling in an unlucky direction; a common practice during the Heian period) - archaism ➜ 方塞がり

expression / ichidan verb:

• to be deprived of one's role; to have one's livelihood taken away

noun / ~する noun:

• buying more than one of the same item in different colors (colours) - slang ➜ イロチ

expression / noun:

• what one has a mind to do; what one feels like (doing); being so minded; (with) that in mind