Pda (noun)

1. A small portable computer that can be held in the hand and used for tasks such as scheduling, making phone calls, and storing and retrieving data.
2. A public display of affection.

Origin:

1990s: acronym from personal digital assistant.

Examples:

1. He always carried a PDA to keep track of his schedule and contacts.
2. She used her PDA to make a quick phone call to her husband.
3. The newest PDAs are equipped with a touch screen and internet connectivity.
4. They were observed engaging in a PDA in the middle of the crowded street.
5. It was hard to miss the PDA between the young couple on the park bench.