Akademik

three-decker
noun
1. made with three slices of usually toasted bread
Syn: ↑club sandwich, ↑triple-decker
Hypernyms: ↑sandwich
2. any ship having three decks
Hypernyms: ↑ship
3. a warship carrying guns on three decks
Hypernyms: ↑warship, ↑war vessel, ↑combat ship

Useful english dictionary. 2012.