Meaning

noun footwear usually with wooden soles

noun any object that acts as a hindrance or obstruction

noun a dance performed while wearing shoes with wooden soles; has heavy stamping steps

originUnknown; perhaps from Middle English clog (“weight attached to the leg of an animal to impede movement”). Perhaps of North Germanic origin and derived from Proto-Germanic *klumpô (“lump, mass, clasp”); compare Old Norse klugu, klogo (“knotty tree log”), Dutch klomp.

Etymology from Wiktionary, CC BY-SA 3.0