Geez

daḳaḳa - to crush, to pound, to make fine (CDG 140)

daḳḳa ‘to be small, thin, to be a child’, daḳiḳ ‘crushed, pounded; slight, thin, minor; young, child, son; children, little ones’ (CDG 140)

PS
*dḳḳ - to crush, to pound; to be ground finely, to be fine, minute (EDA II)

For the frequent in individual Semitic languages semantic shift ‘to be ground finely, to be fine, minute’ > ‘to be little, smalľ in Indo-European languages see Buck 1949, 880ff.