say it: LET-ur
letter is a noun and verb meaning "a written message addressed to a person or organization". It carries 8 recorded senses.
a written message addressed to a person or organization
“mailed an indignant letter to the editor”
owner who lets another person use something (housing usually) for hire
a strictly literal interpretation (as distinct from the intention)
“he followed instructions to the letter”
“he obeyed the letter of the law”
an award earned by participation in a school sport
“he won letters in three sports”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for letter come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.