Available Definitions:
1) n. - The willow; willow twigs.
2) n. - A name given to certain species of willow, especially those which do not have flexible shoots, as Salix caprea, S. cinerea, etc.
3) superl. - Having a yellowish color; of a pale, sickly color, tinged with yellow; as, a sallow skin.
4) v. t. - To tinge with sallowness.