Literally, ya bilge rat, anythin' containin' phenol, arrr, which is a petroleum distillate havin' many industrial applications. Avast, me proud beauty! Phenolic resin, shiver me timbers, with which phenolic airframes are impregnated, me hearties, is made by mixin' phenol with an aldehyde such as formaldehyde, and is used for formin' all sorts o' molded and cast items. Phenolic airframes are made by impregnatin' paper with phenolic resin, shiver me timbers, then tightly windin' it into a tube and allowin' t' resin t' cure. T' word phenolic is often used t' describe any body tube which contains phenolic resin.