Definition: Relating to or characteristic of young people who are between the ages of 13 and 19.

Example: Many teenage students are preparing for their final exams.

Definition: Referring to someone who is between the ages of thirteen and nineteen.

Example: The teenaged students are preparing for their final exams.

Definition: A person who is between the ages of 13 and 19 years old, typically in the stage of development between childhood and adulthood.

Example: The teenager spent the summer volunteering at the local animal shelter.

Definition: To go through the process of having teeth grow through the gums, usually seen in babies.

Example: The baby started to teethe, and it made her fussy and uncomfortable.

Definition: A small object that babies chew on to help relieve the pain of teething.

Example: The baby happily gnawed on the teether to soothe his sore gums.

Definition: The process when a baby's teeth start to come through the gums, often causing discomfort and fussiness.

Example: Many parents find that their babies become more irritable during teething.

Definition: To walk in a slow and unsteady way, often with short steps, like a young child.

Example: The toddler began to toddle across the room, giggling as he went.

Definition: A way of walking that is unsteady, often seen in young children as they learn to walk.

Example: The toddler's toddle was adorable as she tried to keep her balance.

Definition: A set of three things or people that are similar or related in some way.

Example: The triplet siblings all have the same birthday.

Definition: Being genuinely or authentically such by birth, often used to describe someone who is born into a particular status or lineage.

Example: He is a trueborn heir to the throne, having been born into the royal family.

Definition: Referring to two identical or similar people, animals, or things, often born at the same time or existing as a pair.

Example: The twin cities are known for their cultural diversity.

Definition: To be one of two offspring born at the same time from the same mother, or to be paired or coupled with another.

Example: The animals often twin, producing two young at once.

Definition: One of two children born at the same time, or one of two identical or very similar things or people.

Example: My sister and I are twins, born just a few minutes apart.

Definition: To pair or couple something with another similar thing.

Example: The school decided to twin with a school in another country to promote cultural exchange.