button-down

from WordNet (r) 3.0 (2006)

button-down
    adj 1: unimaginatively conventional; "a colorful character in
           the buttoned-down, dull-grey world of business"- Newsweek
           [syn: {button-down}, {buttoned-down}, {conservative}]
    2: of a shirt; having the ends of the collar fastened down by
       buttons; "Brooks Brothers button-down shirts"

from The Collaborative International Dictionary of English v.0.48

buttoned \buttoned\ adj.
   furnished with buttons or something buttonlike. Opposite of
   {unbuttoned}. [Narrower terms: {botonee, botonnee};
   {button-down}; {closed}]
   [WordNet 1.5]