WordNet sense 1 (a very small circular shape):

point

WordNet sense 2 (the United States federal department that institutes and coordinates national transportation programs; created in 1966):

transportation, Department of Transportation

WordNet sense 3 (the shorter of the two telegraphic signals used in Morse code):

dit

WordNet sense 4 (scatter or intersperse like dots or studs):

constellate

WordNet sense 5 (street name for lysergic acid diethylamide):

acid, dose, pane, superman, battery-acid, Elvis, Zen, back breaker, loony toons, Lucy in the sky with diamonds

WordNet sense 6 (distribute loosely):

disperse, dust, scatter, sprinkle