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The periodic procreative desire manifested in the spring by birds, etc.

The contraction of the diaphragm and abdominal muscles to evacuate feces or urine.

The periodic procreative desire manifested in the spring by birds, etc.

The contraction of the diaphragm and abdominal muscles to evacuate feces or urine.

An effort, a struggle.

A voluntary retention of the breath, so as to force down the diaphragm; the abdominal muscles being at the same time contracted forcibly. In this manner the contents of the abdomen are compressed; and the evacuation of the faeces, urine, &c., is effected.

Effort-n. Formativus, Plastic force.

An effort, tendency, or molimen.

Force, tendency, impulse; the vernal sexual impulse in animals. See molimen. [Lat.]