vb. (context chiefly Scotland English) To hatch (of birds); ''colloquially'', of people, to be born.
Usage examples of "cleck".
Some thought it was afflicted with a tympathy, and others, that it was the natural way for such-like ducks to cleck their young.
It happened, however, that some unneighbourly person sent him notice of a clecking of tea chests, or brandy kegs, at which both Jenny and Betty Pawkie were the howdies.