Emergency care given before regular medical aid can be obtained WordNet 3.0 & Open English WordNet

First aid is the first and immediate assistance given to any person with either a minor or serious illness or injury, with care provided to preserve life, prevent the condition from worsening, or to promote recovery until medical services arrive. Wikipedia

Assistance given to any person suffering a sudden illness or injury. Wikipedia Disambiguation

First and immediate assistance given to any person suffering from either a minor or serious illness or injury Wikidata

Basic medical care given to an injury victim, usually where the injury is slight or where better care is not available. Wiktionary

Basic care. Wiktionary (translation)