To supply with something necessary in order to carry out a specific action or task; to provide with (e.g. weapons, provisions, munitions, rigging)
"The factory was equipped with the latest machinery to automate the production line."
In plain English: To equip means to give someone what they need, such as tools or clothes, so that they can do something successfully.
"The team needs to equip themselves with enough water for the long hike."
Usage: Use equip when you mean providing someone or something with the tools, skills, or resources needed for a particular job. It is often confused with supply, but while both involve giving items, equip specifically implies preparation for action rather than just general provision.
The word equip comes from the French équiper, which originally meant to supply or fit out a ship. This term likely traces back to an Old Norse root meaning "to man a ship," reflecting its early connection to sailing vessels before entering English.