The Spanish verb "cantar" translates to "to sing" in English. It is a regular verb that falls under the first conjugation category, as it ends in "-ar." "Cantar" is used to express the action of producing musical sounds with the voice, often with the accompaniment of words. This verb is commonly used in various contexts, from singing songs or performing in concerts to humming a tune. It encapsulates the idea of vocal expression through music, an activity enjoyed universally across cultures. "Cantar" can be employed to discuss singing in both professional and casual settings, making it a versatile verb in the Spanish language.