Trap or an Unseen Difficulty

This page is the CodyCross answer for the clue below from A Sweet Life, Group 1087, Puzzle 3 (Birthday Wishes).

Question is: Trap or an Unseen Difficulty

and the answer is: PITFALL

Word Meaning:

PITFALL — (figurative) A potential, unsuspected, hidden problem, hazard, or danger that is easily encountered but not immediately obvious.

Definitions from Wiktionary.