陸りく海かい空くうTop 45000MeaningsNoun1. land, sea and air2. army, navy and air forceKanji used陸land海sea空empty airPitch accentりくかいくうComposed of陸りく海かいland and sea; army and navyNoun空くうempty air; sky; shunyata (the lack of an immutable intrinsic nature within any phenomenon); emptiness; air force; fruitlessness; meaninglessness; void (one of the five elements); empty (e.g. set)NounUsed in vocabulary陸りく海かい空くう軍ぐんarmy, navy and air force; land, sea and air forcesNoun