The definition of picky is fussy, or overly exacting.
An example of picky is a child who eats only yellow foods.
Informal overly fastidious or exacting; fussy
Origin of pickypick + -y
adjectivepick·i·er, pick·i·est Informal
Excessively meticulous; fussy.
(comparative pickier, superlative pickiest)
- (informal) A picture.