See also alpha 1428.
[1] Third person singular, present indicative active, of a)lu/w; same glossing in other lexica; evidently quoted from somewhere (probably Sophocles, Philoctetes 174; cf. the scholia there).
[2] Quotation not identified by Adler but identifiable as Theodoret (PG 80.1172) on Psalms 41 (42).5, referring to the soul.
[3] See already alpha 1417, and again alpha 1436. According to LSJ s.v., the verb means "to be deeply stirred, excited" with various emotions from grief or despair to joy or exultation.