1The action or an act of sitting down.
Originally and frequently (especially with uprising) in biblical translations of Psalms 138:2 and allusions to this passage.
2Scottish rare A period of sitting down, a sitting. Frequently in "at a (also one) downsitting": during a single period of sitting; at one time or spell of continuous action.
Mid 16th century; earliest use found in George Joye (1490x95–1553), evangelical author. From down- + sitting, after to sit down.