Picky eating refers to a behavior where an individual is very selective and choosy about what they eat. This means that they may only consume certain foods, avoid others due to texture or taste preferences, and can be particular about how their food is prepared or presented. Picky eaters often have strong opinions about the food they will and won't eat, which can make mealtimes challenging for parents and caregivers who are trying to ensure that their child receives a balanced diet.