Entry 1 sense Webster, 1913 Stumbling-block · Stum·bling-block · IPA 01 n. Any cause of stumbling, perplexity, or error. 1. Any cause of stumbling, perplexity, or error. “We preach Christ crucified, unto the Jews a stumbling-block, and unto the Greeks foolishness.” — 1 Cor. i. 23.