noun

• (chiefly Canada, US, Philippines) Performance on a test or other evaluation(s), expressed by a number, letter, or other symbol; a score.
  "He got a good grade on the test."
• (linguistics) Degree (any of the three stages (positive, comparative, superlative) in the comparison of an adjective or an adverb).
• (Canada, US, Philippines, education) A level of primary and secondary education.
  "Clancy is entering the fifth grade this year."
• (Canada, education) A student of a particular grade (used with the grade level).
  "The grade fives are on a field trip."

verb

• (chiefly Canada, US) To assign scores to the components of an academic test, or to overall academic performance.
• (sewing) To remove or trim part of a seam allowance from a finished seam so as to reduce bulk and make the finished piece more even when turned right side out.
• (patternmaking) To increase or decrease the dimensions of a garment pattern from the initial base size in such a way that the overall proportions of the silhouette are maintained across all sizes.
• (linguistics) To describe, modify or inflect so as to classify as to degree.
  "He has rightly observed that while -ísimo superlatives are typically prenominal, adjectives graded with the intensifier muy "very" are characteristically postnominal."