baby (n) 赤ちゃん
babe (n) 赤ちゃん
infant (n) 幼児
tot (n) 幼児 = a veru young child
toddler (n) 子供
kid (n) 子供
tyke (n) 子供 = a small child - - Is the little tyke up to his tricks again? あの小さな奴はまた悪巧みをしているのか？
newborn (n) 新生児
suckling baby (n) 乳児
premature baby (n) 未熟児
fetus (n) 胎児
foetus (n) 胎児
embryo (n) 胚子
ovum (n) 卵子 = a mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell. - - The ovum contributes one chromosome of each pair to the fertilized cell.
ovule (n) 胚珠
egg cell (n) 卵細胞
bib (n) よだれかけ
suckle (n) 乳を飲ませる
teat (n) 乳首
nipple (n) 乳首
breast (n) 乳房 = udder, mamma, momma