a. [ OE. calewe, calu, bald, AS. calu; akin to D. kaal, OHG. chalo, G. Kuhl; cf. L. calvus. ] [ 1913 Webster ]
An in the leafy summit, spied a nest,
Which, o'er the callow young, a sparrow pressed. Dryden. [ 1913 Webster ]
I perceive by this, thou art but a callow maid. Old Play [ 1675 ]. [ 1913 Webster ]
n. (Zool.) [ Named from its note. ] A kind of duck. See Old squaw. [ 1913 Webster ]
n. having a lack of experience of life.