(intransitive) To begin something with determination; to commence a long and difficult task or project.

To attack. / To encourage someone, or an animal, to attack someone. / To be determined to do or achieve something.

(sewing) Of a sleeve, that is made separately and inset into a garment.

(sewing) Made separately and inset into a garment.

that disappears below the horizon

The time, place and circumstance in which something (such as a story or picture) is set; context; scenario. / The act of setting.

present participle of set

Third-person singular simple present indicative form of set

plural of set / (informal) Set theory.

plural of setting