(grammar) a verbal conjugation class in which the verb stem ends in k-, with minor historical changes

(grammar) a verbal conjugation class in which the verb stem ends in s-

(Classical Japanese grammar) a verbal conjugation class in which the verb stem ends in r- with four irregular bases: -a, -i, -u, and -e

(linguistics) a specific historical consonantal shift of the Japanese language during the Heian Period, wherein many word-medial /f/ sounds changed to /w/ sounds

a journey of a thousand miles begins with a single step

a parallelogram

the twenty-four divisions of the solar year / the twenty-four terms used to denote the changing of the seasons

(idiomatic) four treasures of the study: the brush, ink, paper and inkstone used in Chinese and other East Asian calligraphic traditions

a quadriceps femoris muscle

a cackling goose