A Shiva Linga, also known as lingam or ling, is an abstract or aniconic representation of the Hindu god Shiva in Shaivism. It is typically the primary murti or devotional image in Hindu temples dedicated to Shiva, and is found in smaller shrines and private homes as well. The lingam is a short cylindrical pillar-like symbol of Shiva, made of stone, metal, gem, wood, clay, or precious stones. It is often found within a lipped, disked structure that is an emblem of goddess Shakti, and this is called the yoni. The lingam is considered a sacred and holy symbol of Lord Shiva by his devotees.

Here are some additional things to know about Shiva Lingas:

• Meaning: The word "lingam" means "sign, symbol, or mark" in Sanskrit.
• Origin: The Shiva Purana describes the origin of the lingam, known as Shiva-linga, as the beginning-less and endless cosmic pillar (Stambha) of fire, the cause of all causes.
• Symbolism: The lingam represents the most important Hindu deity, Lord Shiva, and is revered as an emblem of generative power. It symbolizes the union of the masculine and the feminine, with the feminine base referred to as Gowripeetam or Avudaiyar.
• Types: Shiva lingas are divided into many types according to the materials used to make them, such as sandalwood paste, river clay, wood, stones, white marbles, precious gems, metal, mercury, gold, silver, etc. . Some types of Shiva lingam are mukhalinga (one face from five carved on sides and top), lingodbhavamurti (a linga emerging out from fiery linga), linga with a cobra on top, svayambhuva (means self-originated linga) directly made from light, Sphatika-linga (made up of quartz), etc. .
• Worship: Shiva Lingam is worshipped by the Hindu community, and is venerated with offerings of milk, water, fresh flowers, young sprouts of grass, fruit, leaves, and sun-dried rice. The Shiva Purana also describes the right way to worship Shiva linga in its 11th chapter in detail, known as Lingodbhava.