• Webster's Revised Unabridged Dictionary
    • n Trefle (Fort) A species of time; -- so called from its resemblance in form to a trefoil.
    • a Tréflé (Her) Having a three-lobed extremity or extremities, as a cross; also, more rarely, ornamented with trefoils projecting from the edges, as a bearing.
    • ***
Century Dictionary and Cyclopedia
    • n trefle A trefoil; any object forming or representing a trefoil.
    • n trefle In fortification, a species of mine in the form of a trefoil.
    • n trefle In heraldry, same as trefoil, 4.
    • trefle In heraldry:
    • trefle Ending in a three-lobed figure or trefoil: said especially of a cross of which each branch is so finished.
    • trefle Decorated with triple leaves or flowers elsewhere than at the end: thus, a bend treflé has such flowers along one side, usually the upper or sinister side, the trefoil flowers often resembling the upper parts of fleurs-de-lis.
    • ***
Chambers's Twentieth Century Dictionary
    • n Trefle a trefoil
    • adj Trefle (tref′lā) ending in a three-lobed figure (her.)
    • ***


Webster's Revised Unabridged Dictionary
F. tréfle,. See Trefoil
Chambers's Twentieth Century Dictionary
L. trifoliumtres, three, folium, a leaf.


In science:

Let fR (tR ) [fL (tL )] be the PDF of the first passage time tR [tL ] respectively.
A Random Walk to a Non-Ergodic Equilibrium Concept
Once, we have evaluated Wph (E ) and Dj F (E ), we have to calculate the integral in Eq.(5) to obtain the two DF, fl (E ) and ftr (E ), corresponding to the l-tr valleys respectively.
High-field transport properties of bulk Si: A test for the Fokker-Planck approach