Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
compound [n, adj ˈkɔmpaund] [vt kəmˈpaund] n (CHEM) соедине́ние; (enclosure) укреплённый ко́мплекс; (LING) сло́жное сло́во#
adj сло́жный
vt (problem etc) осложня́ть (осложни́ть perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.