crottlePronunciation: /ˈkrɒt(ə)l/ (also crotal)Definition of crottle noun a common lichen found on rocks, used in Scotland to make a golden-brown or reddish-brown dye for staining wool for making tweed. Parmelia saxatilis (order Parmeliales) and other species Origin: mid 18th century: from Scottish Gaelic and Irish crotal, crotancrottle in other Oxford dictionaries Definition of crottle in the US English dictionary
