(nautical) a commercial steamship that has no regular schedule or published ports of call.

(pharmacology) A synthetic opioid analgesic administered orally in the form of its hydrochloride C₁₆H₂₅NO₂·HCl to treat moderate to severe pain.

plural of trama

(mycology) The inner, fleshy portion of a mushroom's basidiocarp, distinct from the outer pileipellis or cuticle and from the spore-bearing hymenium.

plural of trammel

present participle of trammel

A hindrance or impediment.

(US) simple past tense and past participle of trammel

A usually triangular sandwich constructed from two slices of soft crustless white bread, popular in Italy.

plural of tramezzino