- crossA geometrical figure consisting of two straight lines or bars intersecting each other such that at least one of them is bisected by the other.
- cruiseA sea or lake voyage, especially one taken for pleasure.
- cruxThe basic, central, or essential point or feature.
- cruciformHaving the shape of a cross.
- crosierA staff with a hooked end similar to a shepherd's crook, or with a cross at the end, carried by an abbot, bishop, or archbishop as a symbol of office.
- crucigerousBearing a cross; marked with the figure of a cross.
- crunodenode (point where one branch of a curve crosses another branch)