say it: twil
twill is a noun and verb meaning "a weave used to produce the effect of parallel diagonal ribs". It carries 3 recorded senses.
a weave used to produce the effect of parallel diagonal ribs
a cloth with parallel diagonal lines or ribs
weave diagonal lines into (textiles)
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 twill 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.