Definitions:

1. A C-shaped general-purpose clamp. NOUN
   • "The carpenter recommended using a larger C-clamp for the heavy-duty metalwork project."
2. A clamp in the shape of the letter C. ADJECTIVE
   • "He tightened the C-clamp to secure the wood pieces together before drilling."
3. A type of clamp device typically used to hold a wood or metal workpiece, and often used in carpentry and welding. NOUN
   • "The workshop instructor demonstrated how to properly use a C-clamp, emphasizing safety and precision."

Synonyms:

• carpenter's clamp
• edge clamp
• g clamp
• metal clamp
• screw clamp