Crab apple's quality

• Sourball quality
• Vinegary quality
• A sharp sour taste
• The taste experience when vinegar or lemon juice is taken into the mouth
• Pungency
• Feature of Granny Smiths
• Feature of Granny Smith apples

Wiktionary Word definitions in Wiktionary
n. The characteristic of being tart; sharpness of taste; sourness; bitterness.

WordNet Word definitions in WordNet
n. the taste experience when vinegar or lemon juice is taken into the mouth [syn: sour , sourness ] a sharp sour taste [syn: acerbity ]