Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
butt [bʌt] n (large barrel) бо́чка#; (thick end) утолщённый коне́ц#; (of rifle) прикла́д; (of pistol) рукоя́тка; (of cigarette) оку́рок#; (BRIT) (of teasing) посме́шище; (:of criticism) предме́т; (US) (inf!) за́дница (!)
vt (subj, goat) бода́ть (impf)
butt in vi встрева́ть (встрять*perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.