, (S, O, K,) verbal noun إِضْحَاكٌ, (KL,) said of God, (S, O,) or of a man, (K,) He made him, or caused him, to laugh. (S, * O, * K, * KL, PS.)
2.
[Hence,] اضحك الضَّبُعَ, said of blood, (TA,) or of the sword, (O, TA,) (assumed tropical:) [It made the hyena to display her teeth; or to snarl, displaying her teeth: or to rejoice: (see 1, latter part:) but explained as meaning] (tropical:) it made the hyena to menstruate. (TA.)
3.
And اضحك الحَوْضَ (tropical:) He filled the wateringtrough so that it overflowed: (O, TA:) its glistening being likened to laughing. (TA.)