Yes, clog is a Scrabble word!

Verb

1. Become or cause to become obstructed

2. Dance a clog dance

3. Impede the motion of, as with a chain or a burden

4. Impede with a clog or as if with a clog

5. Coalesce or unite in a mass

6. Fill to excess so that function is impaired

Noun

1. Footwear usually with wooden soles

2. Any object that acts as a hindrance or obstruction

3. A dance performed while wearing shoes with wooden soles; has heavy stamping steps