From Vulgar Latin *cibrum, from Latin crībrum (through dissimilation), ultimately from Proto-Indo-European *krey- (“to seive”). Compare Aromanian tsir; compare also the different dissimilation in French crible and Portuguese crivo. Alternatively from Latin cilibrum, an earlier or archaic form of cribrum (cf. Sardinian chilibru, chiliru), found in Dioscorides' writings.
ciur n (plural ciururi)