She touched the chair, the table; she lifted the cover of one of the dishes. He still sat in his chair, his ear bent to the echoing chamber of the violin. The fire is real enough to warm me; I can sit in the chair; the things are real enough to eat. Her fingers were clutching and releasing the arms of the chair.
Definition of companion for Students. 1  1 : a person or thing that accompanies another. 2  2 : one of a pair of things that go together The book is the companion to the TV show. 3  3 : a person employed to live with and assist another.
Companion Plants. Companion planting, or companion gardening is the practice of planting two different plants in close proximity to each other on the theory that they help each other in some way. Some plants complement each other, giving off by products that the other plant needs. Those by products are chemicals and micro-nutrients.