A pair-rule gene of Drosophila .
[adj] - having or covered with hair 2. [adj] - hazardous and frightening
• (a.) Bearing or covered with hair; made of or resembling hair; rough with hair; rough with hair; rough with hair; hirsute.
haired adjective having or covered with hair; `Jacob was a hairy man`; `a hairy caterpillar`
Hair'y (-ȳ) adjective Bearing or covered with hair; made of or resembling hair; rough with hair; hirsute. « His mantle hairy , and his bonnet sedge.» Milton. 
A pair rule gene of Drosophila. ... (18 Nov 1997) ... 
Hairy is slang for difficult or problematic.
Type: Term Pronunciation: hār′ē Definitions: 1. Of or resembling hair. 2. Covered with hair. Synonyms: pilar, pilary, pilose