Definitions

1. noun

a small trinket or ornament, especially one that is considered to be of little value or significance.

“She had a shelf full of knickknacks that her grandmother had given her.”

2. noun

a collection of small decorative or sentimental objects.

“The couple’s living room was cluttered with their knicknacks from their travels.”

3. verb

to add or accumulate knickknacks, often in a way that is considered to be cluttering or excessive.

“She started to knickknack her room with all the souvenirs she had collected.”