open-collared

from WordNet (r) 3.0 (2006)

open-collared
    adj 1: of a shirt; not buttoned at the neck; "dressed casually
           in shorts and an open-collared shirt"

from The Collaborative International Dictionary of English v.0.48

open-collared \open-collared\ adj.
   not buttoned at the neck; -- of a shirt; as, dressed casually
   in shorts and an open-collared shirt.
   [WordNet 1.5]

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