吞食 is a compound verb meaning 'to swallow and eat' or more generally 'to consume', often with connotations of rapid, forceful, or complete ingestion. The first character 吞 (tūn) means 'to swallow', emphasizing the physical act of taking something into the mouth and down the throat; the second character 食 (shí) means 'to eat' or 'food', adding the dimension of consumption for nourishment or destruction. Together, they form a vivid, slightly literary or descriptive term — stronger and more visceral than the neutral word 吃 (chī).

This word appears frequently in nature writing, wildlife documentaries, and news reports describing predators consuming prey, natural disasters engulfing areas, or even metaphorical contexts like time 'swallowing up' opportunities. It’s rarely used for everyday human eating (e.g., you wouldn’t say 吞食 lunch); instead, it highlights totality, intensity, or inevitability — as if nothing remains after the action.