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Webster 1913 Edition

Adj.

Clogging, or having power to clog.

Adj.

That clogs, or has power to clog; thick; gross.

cloggy ‎(comparative cloggier, superlative cloggiest)

Tending to cause clogging.
- 1837, Journal of Agriculture
  […] the land in many parts was naturally heavy, and even when the digging was proceeding, very cloggy.
- 1899, Frederick George Jackson, A thousand days in the Arctic
  The snow was very cloggy, making the sledge and our ski run heavily.
Somewhat clogged or impeded.
a cloggy throat