ASL has its own way of expressing plurals.
For example, using the word "look" with handshape , by adding a classifier for the verb to show more than one, the word "look" can be more than one person looking if you use two hands or can be looking at more than one person if you sweep the handshape across from one side to the other.
Plural words are not included in the dictionary. The animated dictionary focuses on basic words or signs