No definitions found for 'ball mill'
Perhaps one of these:
bilamellate,
baleen whale,
boolean logic,
balneal,
bilamellated,
blameless,
blue mould,
balneology,
belone longirostris,
bloomless,
blue nile,
blue mold,
bullen-nail,
blamelessly,
blamelessness,
blue mold fungus,
boolean algebra,
balmily,
bill mauldin