dum bu

part, portion, section, piece, fragment, crevice [IW]

segment, section, paragraph, a period of time, crevice, bit, chunk, fragment, piece, portion, scrap, chip, splinter, patch, fraction, small piece, part, quantity, part, portion, piece, section, part [JV]

blocks, chunks/ divisions, parts; set; piece, fragment, crevice; part, portion, section, piece, fragment, crevice; fragment [RY]