Definitions for "Shamatha"
Tib. Zhiney] "calm abiding" or "remaining in quiescence" after thought activity has subsided; the meditative practice of calming the mind in order to rest free from the disturbance of thought, tranquility meditation; peaceful abiding, resting in calmness, serenity quiescence.
'Calm abiding' or 'remaining in quiescence' after the subsiding of thought activity or the meditative practice of calming the mind in order to rest free from the disturbance of thought.
(Sanskrit) Meditation practice of "resting in tranquility", often practised as sitting meditation resting the mind on the breath. (N.B. The second "h" is silent.)
see Shi nay