infant noun
ADJ. young He is studying hearing in very young infants. | newborn | unborn | stillborn | pre-term, premature jaundice in premature infants | full-term | healthy, normal | low birthweight | human a book on intellectual development in the human infant | female, male | screaming, sleeping Marjorie looked down at the sleeping infant in her arms.
INFANT + NOUN death, mortality countries with high infant mortality | child, daughter, son
PHRASES sudden infant death syndrome
You can also check other dicts: infant (English, 中文解释 ), wordnet sense, Collins Definition