踢马刺

• 足(foot; sole of foot)RADICAL
• 易(change; easy)PHONO-SEMANTIC

Kicking a ball with your foot makes it easily change direction.

• 馬(horse (pictographic))ASSOCIATIVE

The character 馬 depicts a horse with a mane, body, and four hooves running swiftly.

• 朿(sharp thorn; prickle)PHONETIC
• 刂(knife (radical))RADICAL

Using a knife to stab into a sharp thorn—that is the action of piercing.