PUP

noun

1. 1

   Paid up

2. 2

   Prokaryotic ubiquitin-like protein

3. 3

   Variant of potentially unwanted programAcronym of potentially unwanted program, software that most computer users do not want on their computers, such as adware.

proper noun

1. 1

   Variant of Private Use PlaneInitialism of Private Use Plane: either of the two Unicode planes (planes 15 and 16) reserved for private use.

Forms

plural

PUPs