adj.
Pronunciation: ' ka-( ˌ )l ō
Function: adjective
Etymology: Middle English calu bald, from Old English; akin to Old High German kalo bald, Old Church Slavic gol ŭ bare
Date: 1580
: lacking adult sophistication : IMMATURE < callow youth>
– cal · low · ness \ ' ka-l ō -n ə s, -l ə -n ə s \ noun