Shloka or śloka (Sanskrit: श्लोक śloka, from the root श्रु śru, lit. 'hear') in a broader sense, according to Monier-Williams's dictionary, is "any verse or stanza; a proverb, saying"; but in particular it refers to the 32-syllable verse, derived from the Vedic anuṣṭubh metre, used in the Bhagavad Gita and many other works of classical Sanskrit literature.
In its usual form it consists of four pādas or quarter-verses, of eight syllables each, or (according to an alternative analysis) of two half-verses of 16 syllables each. The metre is similar to the Vedic anuṣṭubh metre, but with stricter rules.