Anas formosa, a dabbling duck that breeds within the forest zone of eastern Siberia

(simile, informal) Thoroughly useless.

(transitive) To demolish / (transitive, figuratively) To degrade (someone), to discredit or criticize

plural of Apache tear

To unravel; (figuratively, by extension) to determine; solve. / To separate as if by unraveling.

Alternative form of headteacher

(rare) Resembling or characteristic of a teabag.

present participle of teach away

(law) In patent law, to describe the solution to a problem in a way that excludes a particular alternative to solving that problem addressed by a later invention.

A formal organization composed of parents, teachers, and staff that is intended to facilitate parental participation in a public or private school.