Definitions

1. noun

a thick, yellowish fluid containing dead white blood cells, bacteria, and tissue debris that forms in a wound or infected area, often accompanied by pain and swelling.

“The doctor took a sample of the pus from the infected wound to run some tests.”

2. verb

to produce or accumulate pus, especially in a wound or infected area.

“The skin on her face began to pus after she got scratched by the thorn.”