1 to gather bedclothes etc closely round: I said goodnight and tucked him in.
az: üstünü basdırmaq, örtmək
ru: подоткнуть одеяло и т.п.
2 to eat greedily or with enjoyment: They sat down to breakfast and started to tuck in straight away.
az: iştahla, acgözlüklə yemək, tıxmaq
ru: уплетать