Scientific research that is high-profile, large in scope, and so expensive that it requires government funding.

plural of big day

The day of one's wedding. / Any day on which something significant or momentous happens.

(sports) The final that determines the winner of a competition, where the event also has a small final (consolation final).

(skiing, snowboarding) A discipline in freestyle skiing and snowboarding, involving sliding down a large launch ramp and then launching off a big kicker, to obtain height and time in the air to perform acrobatic maneuvers, and land on a landing slope.

(music) Short for big room house.

simple past tense and past participle of big-note

(informal, transitive, intransitive, Australia, New Zealand) To brag or boast (about).

Third-person singular simple present indicative form of big-note

present participle of big-note