The word 'whaling' is a straightforward English compound built upon the ancient noun 'whale.' The term 'whale' itself has a long history in the Germanic languages, traceable to Old English and likely describing the animal's rounded, rolling form in the water. The addition of the productive '-ing' suffix, a staple of English word formation, transforms the noun into a term denoting the specific activity or industry associated with whales. Thus, the literal construction "whale-ing" logically yields the modern meaning of "the act or practice of hunting whales," with a later figurative extension describing any vigorous, sustained attack.

Structure: whale (large sea mammal) + ing (noun-forming suffix) - whale: From Old English hwæl, meaning "large sea fish, whale." Its ultimate Proto-Germanic origin is \hwalaz, and it is of uncertain deeper etymology, possibly related to words for "round" or "wheel," describing the creature's shape. - ing: A suffix of Old English origin (-ung, -ing) used to form nouns from verbs, denoting an action, process, or its result.