A glossary of information on several common terms used on the pitch
For specific information on positions or the pitch, visit the appropriate page in the menu on the left

22 meter line: line on each side of the field that is 22 meters from the try zone. There are different rules for lineout placement when a ball is kicked out of bounds in front of or behind this line.
Backs: players who are part of the back line, generally smaller and faster
Back line: the backs, formation of the backs which is usually in a staggared/steep/offensive line or in a flat/defensive line
Blind side: see weak side
Center spot: spot in the very center of the field where play begins
Conversion: after a try is scored, the scoring team is awarded an attempt at place kicking the ball through the uprights for 2 points. The location of the kick is anywhere in a vertical line from where the try was scored (usually somewhere around the 22 meter line)
Drop goal: see field goal
Drop kick: a kick where the ball is dropped from the hands and touches the ground before contact with the foot is made
Drop out: a drop kick taken from between the goal posts or on the 22 meter line
Dummy: a faked pass or run
Feeding the scrum: putting the ball into the scrum toward your own players' feet (the ball must be put into the middle)
Field goal: a drop kick through the uprights in open play that is worth 3 points
Flat: defensive positioning where players are arranged in a straight line as close to the offside line as possible
Forwards: players who are part of the scrum, generally taller and stronger
Grub kick: a kick to advance the ball on the ground, often done on the run
Half: typical halves are 40 minutes
Heel: pushing/rolling the ball back with the heel or sole of a cleat
Hook: when the hooker pulls the ball back with their cleat toward their own team in the scrum
Kicking for touch:
Kickoff: a drop kick from the middle of the field. Kickoffs occur at the beginning of each half and and after a team scores (the team that was scored on kicks off to the team that scored, gaining field positioning)
Knock-on: the ball is played forward off of any part of the body other than the foot (below the knee)
Last foot:
Line: see back line
Lineout:
Loose arm: infraction where the hooker's arm is not properly bound to the prop's waist in a scrum
Mark: the location of an infraction - the point where a penalty is taken or a scrum is formed. The ball must be "put through the mark" (see below) in order for play to resume.
Maul:
Obstruction:
Offsides:
On the full: a ball goes out of touch (out of bounds) on the full when it crosses the touchline without bouncing
Open play: general play
Open side: see strong side
Pack: the forwards
Penalty:
Phase:
Place kick: when the ball is placed on the ground before being kicked
Positions: see positions page
Punt: a kick where the ball is dropped from the hands and is kicked before touching the ground
Put through the mark: to put the ball through the mark, the ball must be released by the hands and touched by a foot before play can resume. The ball can be dragged on the ground by the foot, kicked directly (such as a punt), or lightly dropped to the foot and caught again.
**Ruck: a group of players trying to get possession of the ball
Scoring:
Scrum:
Second movement: an attempt to score a try after being tackled
Sin bin: equivalent of a penalty box - where players are sent when they are temporarily dismissed (i.e. when they receive a yellow card)
Steep:
Strip:
Strong side: the side of the scrum or play with the most space, the side farther from the touchline
Touch:
Touchline:
Try line:
Try:
Try zone:
Upright:
Weak side: the side of the scrum or play that has less space, the side closer to the touchline
Yellow card:



Some info from http://www.rugby-online-uk.co.uk/acatalog/Rugby_Positions.html, visit for more info...