Grow  v. (past grew; past part. Grown) 1 increase in size, height, quantity, degree, etc. 2 develop or exist as a living plant or natural product. 3 a produce (plants etc.) By cultivation. B allow (a beard etc.) To develop. 4 become gradually (grow rich). 5 (foll. By on) become gradually more favoured by. 6 (in passive; foll. By over etc.) Be covered with a growth.  grow out of 1 become too large to wear. 2 become too mature to retain (a habit etc.). 3 develop from. Grow up 1 advance to maturity. 2 (of a custom) arise. [old english]