(music) perfect fifth (interval between the first and second overtones or of seven semitones)

(grammar) a verbal conjugation class consisting of five alternating bases: -a, -i, -u, -e, and -o

The Japanese festival for children; a traditional rite of passage and festival day in Japan for three- and seven-year-old girls and three- and five-year-old boys, held annually on November 15. As Shichigosan is not a national holiday, it is generally observed on the nearest weekend. Similar to こどもの日 (Kodomo no Hi, literally “Children's Day”)

a male given name

Japanese night heron

(electronics) pentode (vacuum tube)

pentathlon

five days in the week

to grumble (about something trivial)

(history, government) the Five Guards under the 大宝令 (Taihōryō, “Taihō Code”) (衛門府 (Emonfu, “Gate Guard”), 左衛士府 (Saejifu, “Left Guardsmen”), 右衛士府 (Uejifu, “Right Guardsmen”), 左兵衛府 (Sahyōefu, “Left Soldier Guard”) and 右兵衛府 (Uhyōefu, “Right Soldier Guard”))