coulter (US colter)

n metal blade fixed vertically in front of a ploughshare, to cut the soil before it is lifted and turned by the share 犁刀.

cottage hospital, cottage industry, cottage loaf, cottage pie, cottager, cotter-pin, cotton, cotton candy, cotton seed oil, cotton wool, cotton-wool, cottontail, cotyledon, couch, couch-grass, couchant, couchette, cougar, cough, could, council, council estate, council flat, council house, council house, council-chamber, councillor, councillor (US also councilor), councilor, counsel, counselling, counsellor, counsellor (US also counselor), counselor, count, count for, count in, count noun (also `countable noun), count on, count out, count up,