to continue to have or hold (something)
to continue to use or operate (something)
to keep (somebody) in one's pay or employment; specif to engage the services of (somebody) by paying them a retainer
to keep (something) in one's mind or memory
to have the ability to hold or contain (something)
Lead retains heat
to hold (something) in place
retainable adj
retainment noun
[Middle English reteinen, retainen via early French retenir from Latin retinēre to hold back, keep, restrain, from re- + tenēre to hold]