Defn: A forceps with a measuring attachment for ascertaining the size of the fetal head.

LABILE
La"bile, a. Etym: [L. labilis apt to slip, fr. labi to slip.]

Defn: Liable to slip, err, fall, or apostatize. [Obs.] Cheyne.

LABILITY
La*bil"i*ty, n.

Defn: Liability to lapse, err, or apostatize. [Archaic] Coleridge.

LABIMETER
La*bim"e*ter, n. Etym: [Cf. F. labimetre.] (Med.)

Defn: See Labidometer.

LABIODENTAL
La`bi*o*den"tal, a. Etym: [Labium + dental.] (Phonetics)

Defn: Formed or pronounced by the cooperation of the lips and teeth, as f and v. — n.

Defn: A labiodental sound or letter.