(transitive, informal) To add something extra free of charge. / (transitive, informal) To include in a calculation. / (idiomatic) To quit, to fold. / (transitive, archaic) To inject, as a fluid.

(informal) A small, agile group of startup innovators with a big idea, passion, and modest resources.

(idiomatic) To try or guess at something without having any knowledge about the subject.

plural of Indian summer

(automotive, aviation) The process of squirting a small amount of water, in the form of a fine spray, into the air/fuel mixture going into a gasoline piston engine, in order to cool the engine cylinders, and, thereby, reduce detonation or knocking in high performance engines, especially when using a high compression ratio.

(transitive) To keep (livestock) indoors during harsh weather.

plural of parent-in-law

One's spouse's parent.

(law) A situation in which an individual or legal entity in a position of trust (such as an attorney, investment advisor, broker, politician, executive, director, scientist or physician) has competing professional or personal interests.

(idiomatic) To intrude; to enter or interrupt suddenly and without invitation.