1. A composition; something composite 
2. A mortar made of sand and cement

Derived forms: compos

Encyclopedia: Compo

• open sesame
• open shop
• open sight
• open society
• Open University
• open up
• open weave
• open-air
• open-air market
• open-air marketplace
• open-and-shut
• open-angle glaucoma
• open-class word
• open-collared
• open-door policy
• open-end credit
• open-end fund
• open-end investment company
• workflow
• workforce
• workhorse
• workhouse
• working
• working agreement
• working capital