dḳḳ - to be crushed into small pieces, to be ground up fine
(HALOT 1855)
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.