a wrestling hold in which the toe is held and the leg is twisted against the joints
a small foothold used in climbing
a relatively insignificant position from which future progress might be made; "American diplomacy provided a toehold on which to proceed toward peace talks"; "his father gave him a toehold in the oil business"
the musical interval between one note and another four notes away from it
following the third position; number four in a countable series
coming next after the third and just before the fifth in position or time or degree or magnitude; "the quaternary period of geologic time extends from the end of the tertiary period to the present"
a note that alternates rapidly with another note a semitone above it
the articulation of a consonant (especially the consonant `r') with a rapid flutter of the tongue against the palate or uvula; "he pronounced his R's with a distinct trill"
pronounce with a trill, of the phoneme `r'; "Some speakers trill their r's"