ˈking-size (also king-sized) adjectiveadj 1 BIGvery large, and usually the largest size of something 特大号的 king-sized cigarettes 特长香烟
2 informalBIGSTRONG FEELING OR BELIEF very big, strong, or extreme 极大的;极强烈的 a king-size headache 剧烈的头痛
king-size• a king-size thirst
From Longman Business Dictionary
king-sizeˈking-size (also king-sized) adjectiveadj [only before a noun] the largest available size of a particular productThe duty system greatly favours the king-size brands of cigarette.