三葉機: triplane

画賛, 画讃: / 臥蚕: a silkworm that is resting in preparation for moulting

三男: third son; three men

燐酸肥料: phosphate fertiliser

(biochemistry) essential amino acid

The hiragana syllable ひ (hi). Its equivalent in katakana is ヒ (hi). It is the twenty-seventh syllable in the gojūon order; its position is は行い段 (ha-gyō i-dan, “row ha, section i”).

(onomatopoeia) A shriek, as when recoiling in fear or disgust.

(emphatic, before an adjective, non-productive) indeed, truly

お昼: daytime, the daylight hours; midday, noon; (by extension) the midday meal, lunch

手の平, 掌: palm (inner, concave part of hand)