1. (noun)repair, fix, fixing, fixture, mend, mending, reparation the act of putting something in working order again
2. (noun)fastener, fastening, holdfast, fixing restraint that attaches to something or holds something in place
3. (noun)neutering, fixing, altering the sterilization of an animal
"they took him to the vet for neutering"
4. (noun)fixation, fixing (histology) the preservation and hardening of a tissue sample to retain as nearly as possible the same relations they had in the living body