English
loadmaster
From load + master.
Proto-Indo-European *leyt- ‘to go, go forth’
…
Proto-Germanic *laidō ‘leading, way’
Proto-West Germanic *laidu
Old English lād ‘course, journey; carrying’
Middle English lode ‘way, course; burden’
English load
Proto-Indo-European *méǵh₂s ‘big’
Old Latin magester
Latin magister ‘chief’
Old English mǣster
Middle English maister ‘master’
English master
Today it means
noun The member of an aircrew responsible for the loading and stowage of heavy cargo (so as to minimise the disruption of the aircraft's trim).
Language periods are conventional ranges, not dates for this word.
Etymograph / loadmaster