Close a body part tightly, especially fists, jaw, or teeth

• Tighten from emotion, pain, or effort

紧紧合拢身体部位，尤指拳头、下颌或牙齿

• 因情绪、疼痛或用力而绷紧

Grip or hold something tightly

紧紧抓住或握住某物

Bend and hammer a projecting nail or rivet to secure it

将露出的钉子或铆钉弯折并敲平以固定

A tight grip

• The act or state of clenching, especially the teeth

紧握

• 咬紧或收紧的动作或状态，尤指牙齿

The act or result of clinching a nail or rivet

把钉子或铆钉弯折并敲平的过程或结果