Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun knacker

2 senses of knacker

Sense 1
knacker -- (someone who buys old buildings or ships and breaks them up to recover the materials in them)
       => wrecker -- (someone who demolishes or dismantles buildings as a job)

Sense 2
knacker -- (someone who buys up old horses for slaughter)
       => butcher, slaughterer -- (a person who slaughters or dresses meat for market)