nisus

Meaning

  1. (uncountable, usually) A mental or physical effort to attain a specific goal; a striving.
  2. (uncountable, usually) The periodic procreative desire manifested in the spring by birds, etc.
  3. (uncountable, usually) The contraction of the diaphragm and abdominal muscles to evacuate faeces or urine.

Etymology

From Latin nīsus (“pressure, exertion”).

Notes

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