مُسْتَرَاحٌ
1.
a n. of place: and as such meaning (assumed tropical:) The grave [as being a place of rest or ease]. (Ham p. 228.) [And as such] (assumed tropical:) A privy; synonym مَخْرَجٌ. (S.)
2.
Also, according to rule, a n. of time [i. e. A time of rest or ease]. (Ham ubi suprà.)
3.
And a pass. particle n. of 10. (Id. ibid.) [As such] meaning (assumed tropical:) Dead [for مُسْتَرَاحٌ مِنْهُ]; as also
مُسْتَريِحٌ [lit. at rest or ease]. (Id. p. 251.)
4.
And it may also be used as a verbal noun of 10. (Ham p. 228.)