to hinder or obstruct with thick or sticky matter; choke up

to clog a drain.

to crowd excessively, esp. so that movement is impeded; overfill

Cars clogged the highway.

to encumber; hamper; hinder.

to become clogged, encumbered, or choked up.

to stick; stick together.

to do a clog dance.

anything that impedes motion or action; an encumbrance; a hindrance.

a shoe or sandal with a thick sole of wood, cork, rubber, or the like.

a similar but lighter shoe worn in the clog dance.

a heavy block, as of wood, fastened to a person or beast to impede movement.

clog dance.

British Dialect . a thick piece of wood.