| Noun | 1. |  genus Orthotomus - tailorbirds bird genus - a genus of birds family Sylviidae, Sylviidae - in some classifications considered a subfamily (Sylviinae) of the family Muscicapidae: Old World (true) warblers; American kinglets and gnatcatchers Orthotomus sutorius, tailorbird - tropical Asian warbler that stitches leaves together to form and conceal its nest |