concave area

(somewhat childish) a kiss

to kiss, smooch

a squeak (sound made by mice) / a chirp (sound made by small birds) / sound made by sucking liquid

(archaic) Short for と言う (to iu):

市中: in the city / 支柱: brace, fulcrum, pillar, strut / 仔虫: larva / シチュー: stew / 死中: fatal situation

暗中: the situation in the dark

(slang) going to or being graduated from the same middle school (中学校)

円柱: cylinder; column

爬虫: reptile