METER  is a rhythmic pattern, a regular and controlled repetition of stressed and unstressed syllables. 

Iambic meter is a two syllable pattern:

da DUM, da DUM, da DUM

Shall I  / com pare  / thee to  / a sum / mer's day?
Thou art  / more love / ly and  / more temperate:
Rough winds /  do shake  / the darl / ing buds  / of May,
And sum / mer's lease  / hath all  / too short  / a date

William Shakespeare

This is the most common meter in the English Language.   

Trochee meter is a two syllable pattern: 

DUM da, DUM da, DUM da

Ty ger, / Ty ger, / burn ing / bright

the / for ests / of the / night

im / mort al / hand or / eye

could / frame
thy / fear ful / sym met / try?

from "The Tyger" by William Blake

The anapest  is two unstressed syllables followed by a stressed one:

Bu da pest / is a pest

Finally, there is the dactylic

di no saurs / fly ing high