Anacrusis

Unstressed syllable(s) occurring at the start of a line which do not contribute to the meter.
Found on http://www.poetsgraves.co.uk/glossary_of_poetic_terms.htm

Anacrusis

An`a·cru'sis noun [ Greek ..., from ... to push up or back; ... + ... to strike.] (Pros.) A prefix of one or two unaccented syllables to a verse properly beginning with an accented syllable.
Found on http://www.encyclo.co.uk/webster/A/76

Anacrusis

• (n.) A prefix of one or two unaccented syllables to a verse properly beginning with an accented syllable.
Found on http://thinkexist.com/dictionary/meaning/anacrusis/

anacrusis

in classical prosody, the up (or weak) beat, one or more syllables at the beginning of a line of poetry that are not regarded as a part of the ...
Found on http://www.britannica.com/eb/a-z/a/67

anacrusis

a note or notes that precede the first full bar; a pickup
Found on http://en.wikipedia.org/wiki/Glossary_of_musical_terminology

anacrusis

a note or notes that precede the first full bar; a pickup
Found on http://www.translationdirectory.com/glossaries/glossary307.php

Anacrusis

The addition of an extra unstressed syllable or two at the start of a line of verse--but these addit
Found on http://www.encyclo.co.uk/local/22385

anacrusis

syllable prior to the normal rhythm of a verse
Found on http://phrontistery.info/a.html
No exact match found