1) особенность; признак; свойство
2) ООП элемент определения класса, который может быть атрибутом (attribute) или методом (routine), в C++ эквивалентно понятию "член класса" (class member )
3) топографический элемент, элемент топологии (БИС )
4) сленг ненужное свойство программы, излишество - ancestral features - checking features - diagnostic features - distinctive feature - escape feature - fail-safe feature - floating-point features - graph features - hottest features - key features - mathematical feature - noiseproof feature - power-conservation features - power-saving features - predicate features - procedural features - relational features - retry features - stop-on-character feature - structural feature - tag and drag feature - type ahead feature - window-save feature - zoom feature