clog

noun

• 1a shoe with a thick wooden sole.

• 2an encumbrance or impediment:they found the tax to be an unacceptable clog on the market

verb (clogs, clogging, clogged)

• block or become blocked with an accumulation of thick, wet matter: [with object]:the gutters were clogged up with leaves [no object]:too much fatty food makes your arteries clog up (as adjective clogged)clogged drains
• fill up or crowd (something) so as to obstruct passage:tourists' cars clog the roads into Cornwall