Webster's Revised Unabridged Dictionary · 1913

bomber

bomber , noun

1.
a military aircraft that drops bombs during flight.
2.
a large sandwich on a long crusty roll that is split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the US.
3.
a person who drops bombs or plants and explodes bombs, especially surreptitiously.