(anatomy, usually in the plural) A liplike structure; especially one of the two pairs of folds of skin on either side of the vulva. / (botany) The lip of a labiate corolla.

(colloquial) A laboratory. / (colloquial) Laboratory experiment, test, investigation or result.

(colloquial) A Labrador retriever.

(obsolete) A telltale; a blabber.

Liable to slip, err, fall, or apostatize. / Apt or likely to change. / (chemistry, of a compound or bond) Kinetically unstable; rapidly cleaved (and possibly reformed).

(anatomy, zootomy) Of or pertaining to the lips or labia. / (linguistics, phonetics) Articulated by the lips, as the consonants b, m and w.

(linguistics, phonetics) A consonant articulated by the lips. / (music) An organ pipe having a lip that influences its sound. / (zootomy) Any of the scales bordering the mouth opening of a reptile.

(American spelling) One who uses body strength instead of intellectual power to earn a wage, usually hourly.

(slang) A small-scale workshop with the ability to fabricate almost everything. This includes products generally perceived as limited to mass production.

A room, building or institution equipped for scientific research, experimentation or analysis. / A place where chemicals, drugs or microbes are prepared or manufactured.