Plath ploys

• "Thick as a Brick" and "Solid as a Rock," e.g
• Literary figures?
• "Happy as a clam" and "blind as a bat"
• Theme of this puzzle
• Figures of speech often including "as a"
• Literary comparisons
• Animal analogies, often
• Comparative phrases

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