Lakeweed n. : The water pepper (Polygonum Hydropiper), an aquatic plant of Europe and North America.

Example:
Seeweed or Lakeweed?

Taxonomy
lakeweed, seaweed, lake, Urban Dictionary, mugs, def, fave, slap, Lakewood, Lakes High School, Lakeshore, Lakeside, Lakeview, lakewood CA, lakewood ranch, Lakewood Ranch High School, Lakin Hospital, today's word.

Defination from the web:
lakeweed - 1 definition - Seaweed, except in a lake. ... Tim: No, retard, it's lakeweed. if you call it seaweed again, I will slap you with my dong. get this def on a mug. lakeweed seaweed grrrrr penis right boobs vagina hey a b c d e f g h i j k l m n o p q r s t u v w x y and z ...