laṅghati

  1. to jump over (acc.) step over, to hop Ja.iii.272; Ja.v.472 (langhamāno yāti); Mil.85.
  2. to make light of, disregard neglect, transgress Pv-a.15; Vv-a.138
    ■ Cp. abhilaṅghati, ullaṅghati

caus laṅgheti (= laṅghati) to jump over (acc.), lit. to make jump Ja.v.472 (vatiṃ) Thig.384 (Meruṃ langhetuṃ icchasi); Mil.85
ger laṅghayitvā Thag-a.255, & (poet.); laṅghayitvāna Ja.i.431 (= attānaṃ langhitvā C.); Mhvs.25, Mhvs.44 (pākāraṃ). Cp. olaṅgheti.

laṅgh, a by-form of lagh, as in laghu (see lahu) light, quick; Idg. *legh & *leṅgh;, with meanings of both “quick” & “light” (or “little”) from the movement of jumping. Here belong Gr. ελαξύς little ἐλαφρός quick; Lat. levis (fr. *leghṷis), Goth. leihto E. light; Ohg. lungar quick, Ger. ge-lingen to succeed Further Lat. limen threshold. Perhaps also the words for “lungs,” viz. Ger. lunge, E. lights etc
■ The Dhtp.33 defines lagh (laṅgh) by “gati-sosanesu”