Leaped suddenly (at)

• Took a stab at?
• Suddenly thrusted, as with a sword
• Made a fencing move
• Moved forward quickly
• Dived without a springboard and hurtled forward
• Charged
• Leaped forward
• Made a quick thrust

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Lunge \Lunge\, v. i. [imp. & p. p. Lunged ; p. pr. & vb. n. Lunging .] To make a lunge.