SG Heritage Dictionary

Plummet [Noun] Webster's Dictionary 1828

1. A long piece of lead attached to a line, used in sounding the depth of water.

2. An instrument used by carpenters, masons, etc. in adjusting erections to a perpendicular line, and with a square, to determine a horizontal line. It consists of a piece of lead fastened to a line.

3. Any weight.

4. A piece of lead used by school boys to rule their paper for writing.

Plummet [Noun] Webster's Dictionary 1913

1. A piece of lead attached to a line, used in sounding the depth of water.

2. A plumb bob or a plumb line. See under Plumb, n.

3. Hence, any weight.

4. A piece of lead formerly used by school children to rule paper for writing.

Depth Roget’s Thesaurus §208

N. depth, deepness, profundity, depression #, hollow, pit, shaft, well, crater, gulf, bowels of the earth, bottomless pit, hell, soundings, depth of water, water, draught, submersion, plummet, sound, probe, sounding rod, sounding line, lead, bathymetry, sonar, side-looking sonar, bathometer

V. be deep, render deep, deepen, plunge, sound, fathom, plumb, cast the lead, heave the lead, take soundings, make soundings, dig

Adj. deep, deep seated, profound, sunk, buried, submerged, subaqueous, submarine, subterranean, subterraneous, subterrene, underground, bottomless, soundless, fathomless, unfathomed, unfathomable, abysmal, deep as a well, bathycolpian, benthal, benthopelagic, downreaching, yawning, knee deep, ankle deep

Adv. beyond one's depth, out of one's depth, over head and ears, mark twine, mark twain

Verticality Roget’s Thesaurus §212

N. verticality, erectness, # perpendicularity, right angle, normal, azimuth circle, wall, precipice, cliff, elevation, erection, square, plumb line, plummet

V. be vertical, stand up, stand on end, stand erect, stand upright, stick up, cock up, render vertical, set up, stick up, raise up, cock up, erect, rear, raise on its legs

Adj. vertical, upright, erect, perpendicular, plumb, normal, straight, bolt, upright, rampant, standing up, rectangular, orthogonal

Adv. vertically, up, on end, up on end, right on end, a plomb, endwise, one one's legs, at right angles

Descent Roget’s Thesaurus §306

N. descent, descension, # declension, declination, fall, falling, slump, drop, plunge, plummet, cadence, subsidence, collapse, lapse, downfall, tumble, slip, tilt, trip, lurch, cropper, culbute, titubation, stumble, fate of icarus, avalanche, debacle, landslip, landslide, declivity, dip, hill, rappel

V. descend, go down, drop down, come down, fall, gravitate, drop, slip, slide, rappel, settle, plunge, plummet, crash, decline, set, sink, droop, come down a peg, slump, dismount, alight, light, get down, swoop, stoop, fall prostrate, precipitate oneself, let fall, tumble, trip, stumble, titubate, lurch, pitch, swag, topple, topple over, tumble over, topple down, tumble down, tilt, sprawl, plump down, come down a cropper

Adj. descending, descendent, decurrent, decursive, labent, deciduous, nodding to its fall

Adv. downhill, downwards

Phr. the bottom fell out