גִּמְגּוּם • (gimgúm) m (plural indefinite גִּמְגּוּמִים, singular construct גִּמְגּוּם־, plural construct גִּמְגּוּמֵי־)
Action noun of the verb גִּמְגֵּם (gimgém), from the root ג־מ־ג־ם (g-m-g-m).