Many "as"-in-middle phrases

• "Thick as a Brick" and "Solid as a Rock," e.g
• Theme of this puzzle
• Comparative phrases
• Like words
• "Smart as a whip" and "sharp as a tack"
• "Happy as a clam" and "blind as a bat"
• "Good as gold" and "fresh as a daisy"
• Like expressions?
• Phrases with "as a" in the middle

Wiktionary Word definitions in Wiktionary
n. (plural of simile English)