An excerpt from Rabbi Reuven Chaim Klein’s “What’s in a Word” column:
The word kalkalah in the sense of “basket” appears multiple times in the Mishnah (see Peah 7:3, Dema 7:6, Terumot 4:6, Maasrot 1:5, 4:2, Shabbos 20:3, 21:1, Eruvin 3:8, Kiddushin 2:7, Keilim 16:2, 22:9). Rabbi Tanchum HaYerushalmi (a 13th century exegete who lived in the Holy Land) writes that a kalkalah is an especially big sal that people would typically use to store all sorts of foods. Because its contents generally provide sustenance and nourishment, the word for this type of basket is a cognate of the verb kalkal (see, for example, Gen. 47:12) which means “to sustain.” Another word for “basket” in Mishnaic Hebrew is kefifah (sometimes spelled with a KUF and sometimes with a KAF). This term seems to refer specifically to a “wicker basket” (see Shabbos 2:2, Sotah 2:1, 3:1, Keilim 26:1).