What is the meaning of Cran?

A measure of herrings, either imprecise or sometimes legally specified. It has oftentimes been about 37½ imperial gallons, or ~750 herrings on average (up to 1200 or even ~2500).

A barrel made to hold such a measure.

An embellishment played on the lowest note of a chanter of a bagpipe, consisting of a series of grace notes produced by rapid sequential lifting of the fingers of the lower hand.

Alternative form of qiran

notch

safety catch

hole

wave

guts, bottle, courage

crane (bird)

Obsolete form of craniu.

Source: wiktionary.org