crotals / crottels [ˈkrəʊtəls]
crotals – n.pl. of crotal (crottal, crotale, crottle) – 1. crotalum – one of a pair of cymbals or rods used like castanets by dancers; 2. bell-cymbals or metal rattles used on harnesses for horses or for sheep bells; 3. similar musical instruments.
crottels (crottles) – n.pl. of crottel – various types of lichen, Parmelia spp., found in Scotland and used for dyes