I. clog 1 /klɒɡ $ klɑːɡ/ BrE AmE ( also clog up ) verb ( past tense and past participle clogged , present participle clogging ) [intransitive and transitive]
[ Date: 1500-1600 ; Origin: clog 'to prevent an animal from moving by tying a wooden block to it' (14-19 centuries) , from clog (noun); ⇨ ↑ clog 2 ]
to block something or become blocked:
tourists whose cars clog the roads each summer
clog with
Over many years, the pipes had got clogged up with grease.
—clogged adjective :
clogged highways
II. clog 2 BrE AmE noun [countable usually plural]
[ Date: 1400-1500 ; Origin: clog 'wooden block' (14-19 centuries) ]
a shoe made of wood with a leather top that covers the front of your foot but not your heel
⇨ clever clogs at ↑ clever (6), ⇨ pop your clogs at ↑ pop 1 (13)