Clue: Certain building block, informally

Answer: AMINO

Length: 5

---

Similar Clues:

• Building block, informally (AMINO with 5 letters)
• Toy building-block brand (LEGO with 4 letters)
• __ acid (protein building block) (AMINO with 5 letters)
• Elemental building block (ATOM with 4 letters)
• Building block of physics (ATOM with 4 letters)
• Building-block brand (LEGO with 4 letters)
• Plastic building block (LEGO with 4 letters)
• Protein building blocks (AMINOACIDS with 10 letters)
• Its building blocks are nucleotides (RNA with 3 letters)
• Southwestern building block (ADOBEBRICK with 10 letters)