The continuation of the petiole of a pinnately compound leaf around which the leaflets attach.
The main vein of a simple leaf or leaflet, running from the petiole to its apex, and from which the other veins usually spread.
A cut of beef between the chuck rib and fore ribs.
The main shaft of either a compound leaf, head of grain, or fern frond.
An anatomical shaft or axis in a marine invertebrate.
The central shaft of a feather.