Meanings

sharpened sword

longing for loved ones

vocal trio

the Trinity

trifocal

male bathhouse attendant

cube root

three-color printing (red and yellow and blue)

three heads are better than two

eloquent tongue

sergeant (JGSDF)

the three grand national holidays (Prayer to the Four Quarters, Empire Day, the Emperor's Birthday; pre-1927)

out on a third-base liner

trisect

three days and three nights

three days and three nights

three times

trigonometric function

triangles (used in mechanical drawing)

again and again