v. & n.
--v.
1. (also spirt) a intr. gush out in a jet or stream. b tr. cause (liquid etc.) to do this.
2 intr. make a sudden effort.
--n.
1. (also spirt) a sudden gushing out, a jet.
2 a short sudden effort or increase of pace esp. in racing.
Etymology: 16th c.: orig. unkn.