No definitions found for 'headpack'
Perhaps one of these:
https,
heat of solution,
hot fix,
hautpas,
hit the books,
heat of solidification,
head of state,
hotbox,
htps,
htpc,
head fast,
headpiece,
hautbois,
head of grassy,
hautboyist,
heat-absorbing,
heat of sublimation,
had best,
head of household,
hatbox,
http cookie,
heat of fusion,
head voice,
heat of condensation,
http server,
headfast,
headfish,
huedpostnominal