Definition of "each"

Irregular bedtimes may disrupt healthy brain development in young children, according to a study of intelligence and sleeping habits. ¶ Going to bed at a different time each night affected girls more than boys, but both fared worse on mental tasks than children who had a set bedtime, researchers found.

2013 July 19, Ian Sample, “Irregular bedtimes may affect children's brains”, in The Guardian Weekly, volume 189, number 6, page 34

In one embodiment, there is an additional charge when ordering products as an “each” compared to the unit cost of the item when ordered by the case.

1999, William S. Paasche, Thomas D. Kerker, System and method for managing recurring orders in a computer network, US Patent 7359871 (PDF version), page 50

An each, piece, single item, or individual item package.

2007, David E. Mulcahy, Eaches or Pieces Order Fulfillment, Design, and Operations Handbook (Series on resource management), Auerbach Publications, page 385

The commonly used term “each” means that each individual item is one unit.

2012, Arthur V. Hill, “unit of measure”, in Barry Render, editor, The Encyclopedia of Operations Management, FT Press, page 373

Amour-propre would be able to take an interest in assuming the standpoint of reason, then, if applying 'each' to oneself in rational deliberation were simultaneously bound up with publicly establishing oneself as an 'each'

2008, Frederick Neuhouser, Rousseau's theodicy of self-love, Oxford University Press, page 238