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«Вира и майна» – терминология рабочих-такелажников:
Такела́ж (от нидерл. takelage, от takel — «оснастка»)
«вира» — вверх, подъём. «майна» — вниз, опустить.
В переносном смысле — «взлёты» и «падения».
Maneuver (n.) “planned movement of troops or warship,” 1757, from French manoeuvre “manipulation, maneuver,” from Old French manovre “manual labor” 13c.), from Medieval Latin manuopera (source of Spanish maniobra, Italian manovra), from manuoperare “work with the hands,” from Latin manu operari, from manu, ablative of manus “hand” (from PIE root *man- (2) “hand”) + operari “to work, operate” (from PIE root *op- “to work, produce in abundance”).