English: way of slapping or tamping something to make it more compact
Source: Peter Martin's Kelabit Dictionary
nedtak (ng-dedtak): when constructing a levee in a padi field, to slap the wet clay with a large paddle or club to make it more compact; prior to wrapping cooked rice in leaf packages, to pat, squeeze and press the rice into a compact mass using a small wooden paddle or spatula (bugo)