pəˈkipəsə noun
Usage: capitalized
Etymology: New Latin, probably from pachy- + Greek pas all; akin to Sanskrit śaśvat every, śvayati he swells — more at cave
: a genus of lasiocampid moths including a Syrian silkworm ( P. otus ) reared by the Greeks and Romans for its silk until the introduction of the Chinese silkworm in A.D. 550