Main Entry: ³deep

Function: noun

Date: before 12th century

1 a : a vast or immeasurable extent : abyss b (1) : the extent of surrounding space or time (2) : ocean
2 : any of the deep portions of a body of water; specifically : a generally long and narrow area in the ocean where the depth exceeds 3000 fathoms (5500 meters)
3 : the middle or most intense part <the deep of winter>
4 : any of the fathom points on a sounding line other than the marks