平

skewered sweet rice cakes served with soy sauce and miso

Uroctea compactilis (species of araneomorph spider)

Mathematics

square root

Pyongyang (North Korea)

peace and tranquility; peace and tranquillity

castle on the plains

Noun or verb acting prenominally

annual average; annual mean

plain text; unciphered text

blow with the flat of a sword

slap; smack

metal flattened by striking

tape; flat braid

type of flat ornamental hairpin made of silver and inscribed with a clan's crest or patterns of birds and flowers

Music

equal temperament; mean-tone tuning

Shōhei era (of the Southern Court) (1346.12.8-1370.7.24)

seats immediately in front of the stage (e.g. in kabuki); pit; orchestra; parquet

Sumo

rank-and-file wrestlers in the highest division

whale shark (Rhincodon typus)

commonplace; ordinary; trite

informal and easy to understand (of writing, etc.)

smooth; even; level; flat

meter (in Chinese poetry); consistency

flat bottom

to be suppressed

Music

(in Japan) 3rd note of the ancient chromatic scale (approx. E)

Music

hyōjō mode (one of the six main gagaku modes)

Mahjong

concealed winning hand consisting of chows, a pair that isn't a value pair, and an open wait

Acheilognathus rhombeus (species of cyprinid)

leveling; levelling; equalization; alleviation (e.g. of unemployment); harmonization

sole (any fish of the families Cynoglossidae and Soleidae)

red tonguesole (Cynoglossus joyneri)