a larva of an insect with incomplete metamorphosis (as the dragonfly or mayfly)
(classical mythology) a minor nature goddess usually depicted as a beautiful maiden; "the ancient Greeks believed that nymphs inhabited forests and bodies of water"
(Old Testament) a judge of Israel who performed herculean feats of strength against the Philistines until he was betrayed to them by his mistress Delilah
an obstruction that stands in the way (and must be removed or surmounted or circumvented)
something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan"