Banking pin (Horol.), a pin against which a lever strikes, to limit its
motion. -- Pin drill (Mech.), a drill with a central pin or projection
to enter a hole, for enlarging the hole, or for sinking a recess for
the head of a bolt, etc.; a counterbore. -- Pin grass. (Bot.) See
Alfilaria. -- Pin hole, a small hole made by a pin; hence, any very
small aperture or perforation. -- Pin lock, a lock having a cylindrical
bolt; a lock in which pins, arranged by the key, are used instead of
tumblers. -- Pin money, an allowance of money, as that made by a
husband to his wife, for private and personal expenditure. -- Pin rail
(Naut.), a rail, usually within the bulwarks, to hold belaying pins.
Sometimes applied to the fife rail. Called also pin rack. -- Pin wheel.
(a) A contrate wheel in which the cogs are cylindrical pins. (b)
(Fireworks) A small coil which revolves on a common pin and makes a
wheel of yellow or colored fire.
Pin (?), v. t. [imp. & p. p. Pinned (?); p. pr. & vb. n. Pinning.] [See
Pin, n.] To fasten with, or as with, a pin; to join; as, to pin a
garment; to pin boards together. "As if she would pin her to her
heart." Shak.
To pin one's faith upon, to depend upon; to trust to.
Pi"Òa cloth` (?). A fine material for ladies' shawls, scarfs,
handkerchiefs, etc., made from the fiber of the pineapple leaf, and
perhaps from other fibrous tropical leaves. It is delicate, soft, and
transparent, with a slight tinge of pale yellow.
Pin"a*coid (?), n. [Gr. &?;, &?;, a tablet + -oid.] (Crystallog.) A
plane parallel to two of the crystalline axes.
Pi*nac"o*lin (?), n. [Pinacone + L. oleum oil.] (Chem.) A colorless
oily liquid related to the ketones, and obtained by the decomposition
of pinacone; hence, by extension, any one of the series of which
pinacolin proper is the type. [Written also pinacoline.]
Pin"a*cone (?), n. [From Gr. &?;, &?;, a tablet. So called because it
unites with water so as to form tablet- shaped crystals.] (Chem.) A
white crystalline substance related to the glycols, and made from
acetone; hence, by extension, any one of a series of substances of
which pinacone proper is the type. [Written also pinakone.]
||Pin`a*co*the"ca (?), n. [L. pinacotheca, fr. Gr. &?;; &?;, &?;, a
||picture + &?; repisitory.] A picture gallery.
Pin"a*fore` (?), n. [Pin + afore.] An apron for a child to protect the
front part of dress; a tier.
||Pin"a*ko*thek` (?), n. [G.] Pinacotheca.
Pi*nas"ter (?), n. [L., fr. pinus a pine.] (Bot.) A species of pine
(Pinus Pinaster) growing in Southern Europe.
||Pi"nax (?), n.; pl. Pinaces (#). [L., fr. Gr. &?; tablet.] A tablet;
||a register; hence, a list or scheme inscribed on a tablet. [R.] Sir
||T. Browne.
||Pince`-nez" (?), n. [F. pincer to pinch + nez nose.] Eyeglasses kept
||on the nose by a spring.
Pin"cers (?), n. pl. [Cf. F. pince pinchers, fr. pincer to pinch. See
Pinch, Pinchers.] See Pinchers.
Pinch (?), v. t. [imp. & p. p. Pinched (?); p. pr. & vb. n. Pinching.]
[F. pincer, probably fr. OD. pitsen to pinch; akin to G. pfetzen to
cut, pinch; perhaps of Celtic origin. Cf. Piece.] 1. To press hard or
squeeze between the ends of the fingers, between teeth or claws, or
between the jaws of an instrument; to squeeze or compress, as between
any two hard bodies.