[1] LSJ entry at web address 1.
[2] Aristophanes Ecclesiazusae 991 (see web address 2); the scholia there supply the gloss here. But what does their explanation actually mean? J. Taillardat, Les Images d'Aristophane (Paris 1965) 51-3 argues that the old woman here has white hair -- rather than a white face (van Leeuwen ad loc.) -- like a flour-covered sieve. Ussher ad loc. rejects both, in favour of a sexual double entendre; her vagina is like a perforated old sieve; but kresera is not included amongst the culinary-inspired terms for the female sexual organs recognized by J. Henderson, The Maculate Muse (New Haven 1975) 142-4.