Stumbling-Block
From BiblePortal Wikipedia
Hastings' Dictionary of the Bible [1]
Stumbling-Block (Gr. skandalon ; AV [Note: Authorized Version.] ‘offence,’ ‘occasion to fall,’ ‘stumbling-block’; RV [Note: Revised Version.] ‘stumbling-block,’ ‘thing that causes stumbling,’ ‘occasion of stumbling’). Properly the spring of a trap (cf. Romans 11:9 ); hence something that ensnares or trips up . The verb is skandatizein ; AV [Note: Authorized Version.] ‘offend,’ RV [Note: Revised Version.] ‘cause to stumble.’
David Smith.
Webster's Dictionary [2]
(n.) Any cause of stumbling, perplexity, or error.