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Amphibia (class comprising the extant and extinct amphibians)

Aves (class of vertebrates comprising the birds)

Scaphopoda (class of molluscs comprising the tooth shells)

well rope

rope made of hair

Sumo

putting on the tsuna

Actinopterygii (class of the ray-finned fishes)

Obsolete term

bridle made from knotted rope or leather

multi-coloured rope ceremonial garland, placed on cattle, large rocks, etc.

Rostroconchia (class of extinct molluscs)

Monoplacophora (polyphyletic class of mollusks)

Solenogastres (subclass of small worm-like molluscs)

Theria (mammalian subclass)

Synapsida (class of amniotes)

Anthozoa (class of cnidarians)

Sarcopterygii (class comprising the lobe-finned fishes)

Polychaeta (class of annelid worms)

heaving line (nautical)

last ray of hope; only hope

enforcement of official discipline; tightening of discipline; eliminating corruption among government officials

(one's) handling of the reins; how well one controls things

to loosen the reins; to let up on (someone)

mooring line; mooring rope; painter

Sumo

facing one's opponent head-on and winning via overwhelmingly superior strength or skill; match in which a yokozuna overpowers his opponent

one's last hope; one's only hope; the last hope