Extended Strong's Greek Lexicon (Abbott-Smith based)
to burst
Usage: λάσκω __1. (in cl., poët.) to clang, crash, crack; in late prose, to crack or burst noisily: Act.1:18 (ἐλάκησεν, perh., however, from λακέω, which see; Bl., in l). __2. (in cl., prose) to scream, shout.† λακέω, Dor. for ληκέω = λάσκω, q.v (AS)