Chen Collection, Middle Volume. Radical: Tree (mù). Kangxi strokes: 12. Page 534, Entry 11.
Broad Rhymes (Guangyun): Pronounced sen. Collected Rhymes (Jiyun), Rhyme Meetings (Yunhui), and Correct Rhymes (Zhengyun): Pronounced can. Also written in a variant form (sen).
Explanation of Characters (Shuowen): The appearance of a multitude of trees.
Pan Yue, Rhapsody on Pheasant Shooting (Shezhi Fu): Luxuriant and dense.
Also indicates lush growth.
Pan Yue, Rhapsody on the Imperial Field (Jitian Fu): Arranged in rows like jade tablets held in the court.
Also refers to standing upright or arranged in order.
Original Classic (Yuanbao), Kun Text: Standing like a gathered pile.
Also, Guling Literary Collection, Poem by Du Zeng of the Song Dynasty: Sorrowful apes hide in the dense and towering trees, thirsty deer listen to the murmuring water.
Note: Sen is read in the departing tone, pronounced shen.