snarl up
phrasal verb
snarled up;
snarling up;
snarls up
Definition of snarl up
(Entry 1 of 2)
chiefly British
: to stop (something or someone) from moving or making progress
Traffic was snarled up because of the parade.
snarl-up
nounDefinition of snarl-up (Entry 2 of 2)
chiefly British
: a situation in which one can no longer move or make progress
a traffic snarl-up