siku

Siku is a term with more than one meaning depending on context. In Southeast Asian languages, siku is the common noun for the elbow, the joint that connects the upper arm to the forearm. It appears in everyday speech as well as in medical and educational language in Indonesian and Malay.

SIKU refers to a German brand of scale model vehicles produced by the company Sieper GmbH. Established in the mid-20th century, the SIKU line is known for die-cast metal and plastic models of cars, trucks, tractors, and construction equipment, often featuring realistic detailing and functional components such as opening doors, movable parts, and working suspension. SIKU products are marketed for children and collectors and are distributed internationally. The brand represents a long-standing presence in the toy vehicle market and is one of several well-known German die-cast makers.

In addition to these primary uses, siku can appear as a proper noun in various languages or contexts. However, the most common references are the Indonesian/Malay term for the elbow and the German toy-brand SIKU.