A virgin breed of cannabis that has not been mixed or crossbred with another, thus maintaining its original genetics.
In popular usage, an heirloom is something that has been passed down for generations through family members. Examples are a Family Bible, antiques, weapons or jewellery.
The term originated with the historical principle of an heirloom in English law, a chattel which by immemorial usage was regarded as annexed by inheritance to a family estate. Loom originally meant a tool. Such genuine heirlooms were almost unknown by the beginning of the twentieth century.
English
Etymology
From Middle English heirlome (“heirloom”, literally “a tool or article passed to one's heirs”), equivalent to heir + loom.