"Happy as a clam" and "blind as a bat"

• Literary comparisons
• Comparative phrases
• "Like" things?
• Fit as a fiddle and tough as nails
• "Good as gold" et al
• Literary figures?
• Like expressions?
• "She's Like the Wind" and others
• "Mad as a hatter" et al

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