What is the meaning of Propp?

a plug

a plug

a plug for stopping a hole (to prevent some liquid from passing through it, e.g. for a sink)

a plug or clot or clog blocking flow, e.g. an ice plug, a blood clot, or in a clogged pipe

a fuse for preventing overcurrent, typically a DIAZED fuse with a screw-in porcelain fuse holder

a punch

Short for proposition.

Source: wiktionary.org