dot

[1]	spot , fleck , speckle , stipple , bespeckle
[2]	stud , constellate
[3]	scatter , sprinkle , dust , disperse

[1]	spot , speck , point , jot , mark , iota , fleck , dab , decimal point , (Brit) full stop , (US) period
[2]	on the dot , Department of Transportation , Transportation , exactly , precisely , punctually , to the minute/second , on time , (Colloq) on the button
[3]	dit
[4]	acid , back breaker , battery-acid , dose , Elvis , loony toons , Lucy in the sky with diamonds , pane , superman , window pane , Zen