plural of slippery elm

Ulmus rubra, a North American elm tree with a mucilaginous and slightly aromatic inner bark.

plural of slippery slope

(genetics) A small section of codon nucleotide sequences that controls the rate of ribosomal frameshifting.

plural of slippery sequence

(figuratively) A chain of events that, once initiated, cannot be halted; especially one in which the final outcome is undesirable or precarious.

A mushroom in genus Suillus, family Boletaceae, especially Suillus luteus; boletes, they have no gills, but release spores from tubes ending in open pores.

(simile, colloquial) So slippery that it is almost impossible to hold. / (idiomatic, simile, colloquial) Very crafty or cunning.

plural of slippery nipple

Warning, often in the form of a sign, that people should pay attention when walking on a wet and slippery floor not to fall down and get injured.