[sub.ma.rine] adj (1648): underwater; esp: undersea "~ plants" "~ minerals"
[2]submarine n (1703) 1: something that functions or operates underwater; specif: a naval vessel designed to operate underwater
2: a large sandwich on a long split roll with any of a variety of fillings (as meatballs or cold cuts, cheese, lettuce, and tomato)--called also grinder, hero, hoagie, Italian sandwich, poor boy, sub, torpedo [3]submarine vb -rined ; -rin.ing vt (1914): to attack by or as if by a submarine: attack from beneath ~ vi: to dive or slide under something