Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class II. Words Relating to SpaceSection II. Dimensions
2. Linear Dimensions
208. Depth.
PIT, shaft, hollow, well, crater; gulf [See Interval]; deep, abyss, bowels of the earth, bottomless pit, hell.
SOUNDINGS, depth of water, water, draft or draught, submersion; plummet, sound, probe; sounding-rod, – line; lead; bathometer, bathymeter, bathymetry; benthos; submarine, U-boat; depth bomb.
SOUND, heave the lead, take soundings; dig (excavate) [See Concavity]; plunge [See Plunge].
knee-deep, ankle-deep.
BOTTOMLESS, soundless, fathomless; unfathomed, unfathomable; abysmal; deep as a well; bathycolpian or bathukolpic or bathukolpian; deep-sea, benthal, benthopelagic; bathymetric, bathymetrical; bathypelagic, bathysmal; down-reaching, yawning.