1. To transport someone or something in (to something or some place) in a surreptitious or hidden manner, especially when it is illegal to do so. A noun or pronoun can be used between "smuggle" and "in." A: "I really miss the fresh salami they make back home, but I can't bring it through customs." B: "I'll try to smuggle in a bit of it with me the next time I come to visit." I tried smuggling my friend in the party by having her hide in a suitcase that I said had stereo equipment in it.
2. To hide someone or something inside of something in order to transport them or it without being seen or noticed, especially when it is illegal to do so. A noun or pronoun is used between "smuggle" and "in." He was caught smuggling narcotics in his luggage. The group ran an operation smuggling runaway slaves in coffins that they transported in wagons from the South to the North.
See also: smuggle