intransitive. Of the blower: To sound a blast. to blow up: to sound a whistle (as a signal).

intransitive. To blow (on a trumpet or other wind instrument).

Of a person: To sound or blow a horn or similar wind instrument. Also with extensions, to toot it, to toot on, to toot along, to toot one's way, etc.

absol. or intransitive. To blow a blast on a wind-instrument.

intransitive. To toot continuously; to produce a succession of modulated notes on a wind-instrument.

= 1.