a metatarsal bone

a plantaris muscle

(informal) "octopus leg wiring": electrical setup involving multiple devices attached to one outlet, hence cluttered and carrying the risk of overloading

burden, impediment

Same as above

cephalopod

a unit of volume equal to 1,200 millet grains

personal

full-fledged, qualified, up to standard / adulthood, behaving like an adult or as a member of the society / Used other than figuratively or idiomatically: see 一人, 前. ("one person's portion")

a handful / a small amount