Mi·mo·sa n.  Bot. A genus of leguminous plants, containing many species, and including the sensitive plants (Mimosa sensitiva, and Mimosa pudica).
 Note: ☞ The term mimosa is also applied in commerce to several kinds bark imported from Australia, and used in tanning; -- called also wattle bark.

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 Sen·si·tive a.
 1. Having sense of feeling; possessing or exhibiting the capacity of receiving impressions from external objects; as, a sensitive soul.
 2. Having quick and acute sensibility, either to the action of external objects, or to impressions upon the mind and feelings; highly susceptible; easily and acutely affected.
    She was too sensitive to abuse and calumny.   --Macaulay.
 3. (a) Mech. Having a capacity of being easily affected or moved; as, a sensitive thermometer; sensitive scales. (b) Chem. & Photog. Readily affected or changed by certain appropriate agents; as, silver chloride or bromide, when in contact with certain organic substances, is extremely sensitive to actinic rays.
 4. Serving to affect the sense; sensible. [R.]
    A sensitive love of some sensitive objects.   --Hammond.
 5. Of or pertaining to sensation; depending on sensation; as, sensitive motions; sensitive muscular motions excited by irritation.
 Sensitive fern Bot., an American fern (Onoclea sensibilis), the leaves of which, when plucked, show a slight tendency to fold together.
 Sensitive flame Physics, a gas flame so arranged that under a suitable adjustment of pressure it is exceedingly sensitive to sounds, being caused to roar, flare, or become suddenly shortened or extinguished, by slight sounds of the proper pitch.
 Sensitive joint vetch Bot., an annual leguminous herb (Aeschynomene hispida), with sensitive foliage.
 Sensitive paper, paper prepared for photographic purpose by being rendered sensitive to the effect of light.
 Sensitive plant. Bot. (a) A leguminous plant (Mimosa pudica, or Mimosa sensitiva, and other allied species), the leaves of which close at the slightest touch. (b) Any plant showing motions after irritation, as the sensitive brier (Schrankia) of the Southern States, two common American species of Cassia (Cassia nictitans, and Cassia Chamaecrista), a kind of sorrel (Oxalis sensitiva), etc.
 -- Sen*si*tive*ly adv. -- Sen*si*tive*ness, n.

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 Hum·ble a. [Compar. Humbler superl. Humblest ]
 1. Near the ground; not high or lofty.
    Thy humble nest built on the ground.   --Cowley.
 2. Not pretentious or magnificent; unpretending; unassuming; modest; as, a humble cottage.  Used to describe objects.
 3. Thinking lowly of one's self; claiming little for one's self; not proud, arrogant, or assuming; thinking one's self ill-deserving or unworthy, when judged by the demands of God; lowly; weak; modest.  Used to describe people.
    God resisteth the proud, but giveth grace unto the humble.   --Jas. iv. 6.
    She should be humble who would please.   --Prior.
    Without a humble imitation of the divine Author of our . . . religion we can never hope to be a happy nation.   --Washington.
 Humble plant Bot., a species of sensitive plant, of the genus Mimosa (Mimosa sensitiva).
 To eat humble pie, to endure mortification; to submit or apologize abjectly; to yield passively to insult or humiliation; -- a phrase derived from a pie made of the entrails or humbles of a deer, which was formerly served to servants and retainers at a hunting feast. See Humbles. --Halliwell. --Thackeray.


 Mimosa sensitiva
      n : semi-climbing prickly evergreen shrub of tropical America
          having compound leaves sensitive to light and touch [syn:
           sensitive plant]