Definition of "cloggy"

[…] Nature stirres up all young things, Boyes, and Lambs, and Kitlins, to play and run about, by which they disperse the cloggy humours that otherwise would settle in their joynts […]

1654, Thomas White, A Contemplation of Heaven with an Exercise of Love‎, Paris: The Ninth Discourse, page 100

[…] the land in many parts was naturally heavy, and even when the digging was proceeding, very cloggy.

1837, Journal of Agriculture

A cloggy sensation of the lukewarm fat of meat is upon me (we dined an hour or two ago), and my head is as heavy as so much lead.

1849 May – 1850 November, Charles Dickens, chapter 7, in The Personal History of David Copperfield, London: Bradbury & Evans, […], published 1850

The snow was very cloggy, making the sledge and our ski run heavily.

1899, Frederick George Jackson, A thousand days in the Arctic