/twil/ , n.
1. a fabric constructed in twill weave.
2. a garment, as a suit or trousers, of this fabric.
3. See twill weave .
v.t.
4. to weave in the manner of a twill.
5. to weave in twill construction.
[ 1300-50; north and Scots var. of twilly (n.), ME twyle, OE twili ( c ), half trans., half adoption of L bilic- (s. of bilix ) having double thread. See TWI- ]