(onomatopoeia) Representing gentle laughter.

mumblingly

卑弥呼: Himiko, semi-legendary queen of Yamatai / ひみ子, 一三子, 火見胡, 火見子, 火魅子, 光水子, 公子, 灯望光: a female given name / 日海子, 日見子, 日実子, 日珠子, 日美子, 日魅子, 日巳子, 日弥子: a female given name

secret base (of the military, of children, etc.)

secret society

頻尿: pollakiuria, frequent urination

secret police

(cryptography) secret key

品目: item, article; a list of items

共晶: eutectic composition / 協商: (diplomatic) agreement / 狭小: quality of being narrow / 胸章: a badge / 胸墻: breastwork / 橋床: the deck of a bridge / 競翔: pigeon racing / 強将: a strong leader, a brave general