n. & v.
—n.
1 a short sharp sound as made by a horn, trumpet, or whistle.
2 US sl. cocaine or a snort (see SNORT n. 4) of cocaine.
—v.
1 tr. sound (a horn etc.) with a short sharp sound.
2 intr. give out such a sound.
Derivatives:
tooter n.
Etymology: prob. f. MLG tuten, or imit.
2.
n. Austral. sl. a lavatory.
Etymology: 20th c.: orig. unkn.
Useful english dictionary. 2012.