Definitions

1. noun

a person or thing that accompanies or follows someone or something, especially as a companion or appendage

“She was a bit of a tagalong on the group’s trip to the mountains.”

2. adjective

done or made as a secondary or supplementary activity

“The tagalong activity at the summer camp was a fun way to learn about teamwork.”

3. verb

to accompany or follow someone or something, especially as a companion or appendage

“The kid tagged along with his older brother to the amusement park.”