rheum, fump, gum (eye)
From Ottoman Turkish چاپاق (çapak), ultimately from Proto-Turkic *čalp-. Cognate with Uyghur چاپاق (chapaq, “fump, (eye) gum”), Karakhanid [script needed] (çalpak, “dirt”). Also related to Karakhanid [script needed] (çalpaŋ, “mud”).
Practice speaking and memorizing "çapak" and many other words and sentences in Turkish.