Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
clog [klɔg] n сабо́*nt ind
vt (drain) засоря́ть (засори́ть perf)
vi (also: clog up)(sink) засоря́ться (засори́ться perf)
my nose is clogged (up) у меня́ зало́жен нос
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: