snarl up

1 of 2

phrasal verb

snarled up; snarling up; snarls up

chiefly British

: to stop (something or someone) from moving or making progress

Traffic was snarled up because of the parade.

snarl-up

2 of 2

noun

chiefly British

: a situation in which one can no longer move or make progress

a traffic snarl-up