on the button

from WordNet (r) 3.0 (2006)
on the button
    adv 1: just as it should be; "`Precisely, my lord,' he said"
           [syn: {precisely}, {exactly}, {on the nose}, {on the
           dot}, {on the button}]
    adj 1: being precise with regard to a prescribed or specified
           criterion; "his guess was on the nose"; "the prediction
           for snow was right on the button" [syn: {on the nose},
           {on the button}]