cf. already nu 503. After Homer, either the active or the middle of nosfi/zw could have the sense of "steal"; see LSJ s.v. II and III (web address 1).
Same or similar entry in other lexica (references at Photius nu266 Theodoridis); the headword -- masculine accusative singular or neuter nominative/accusative singular of this present participle -- must be quoted from somewhere.