WordNet

a project of personal concern to someone; "this project is his baby"
a very young mammal; "baby rabbits"
a very young child (birth to 1 year) who has not yet begun to walk or talk; "the baby began to cry again"; "she held the baby in her arms"; "it sounds simple, but when you have your own baby it is all so different" (同)babe, infant
(slang) sometimes used as a term of address for attractive young women (同)babe, sister
an unborn child; a human fetus; "I felt healthy and very feminine carrying the baby"; "it was great to feel my baby moving about inside"
the youngest member of a group (not necessarily young); "the baby of the family"; "the baby of the Supreme Court"

PrepTutorEJDIC

『赤ん坊,赤ちゃん』 / (家族・グループの中で)いちばん年少の人,最年少者 / 赤ん坊みたいな人 / (また『babe』)《米俗》《特に若い女の子への呼びかけた用いて》かわいこちゃん / 赤ん坊の[ような],赤ちゃん用の / 《話》…'を'赤ちゃんのように扱う,甘やかす

Berger SE1, Theuring C, Adolph KE.
Infant behavior & development.Infant Behav Dev.2007 Feb;30(1):36-49. Epub 2006 Dec 5.
Seven hundred and thirty-two parents reported when and how their infants learned to climb stairs. Children typically mastered stair ascent (mean age=10.97 months) several months after crawling onset and several weeks prior to descent (mean age=12.53 months). Most infants (94%) crawled upstairs the f
PMID 17292778

Plasticity in the development of handedness: evidence from normal development and early asymmetric brain injury.

Corbetta D1, Williams J, Snapp-Childs W.
Developmental psychobiology.Dev Psychobiol.2006 Sep;48(6):460-71.
Previous research revealed that shifting patterns of hand preference in the first year of life are linked to infants' sensory-motor experiences as they learn to sit, creep, and walk. In this report, we examine whether new and different forms of locomotion and sensory-motor experiences similarly cont
PMID 16886184

Relevance of the Pediatric Powered Wheelchair Screening Test for children with cerebral palsy.

Furumasu J1, Guerette P, Tefft D.
Developmental medicine and child neurology.Dev Med Child Neurol.2004 Jul;46(7):468-74.
In a previous study we developed a cognitive assessment battery called the Pediatric Powered Wheelchair Screening Test (PPWST) to help clinicians determine a young child's readiness to drive a powered wheelchair. The current multicenter study sought to determine: (1) whether the PPWST is appropriate
PMID 15230460