Extended Strong's Greek Lexicon (Abbott-Smith based)
labor
Usage: ὠδίν (late form of ὠδίς), -ῖνος, ἡ [in LXX for חֵבֶל חֶבֶל (and wrongly for חֶבֶל חֶבֶל, cf. Ac, l.with), חִיל, etc. ;] a birth pang, travail pain: 1Th.5:3; metaphorically, of extreme suffering, Mat.24:8, Mrk.13:8; ὠδῖνες θανάτου (Psa.18:4 מָוֶת חֶבֶל), Act.2:24.† (AS)