adj.
Pronunciation: ' dü(- ə )l also ' dyü- ə l
Function: adjective
Etymology: Latin dualis, from duo two ― more at TWO
Date: 1597
1 of grammatical number : denoting reference to two
2 a : consisting of two parts or elements or having two like parts : DOUBLE b : having a double character or nature
– du · al · ly \ - ə (l)-l ē \ adverb